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Private Italian aerospace company
D-Orbit (as in de-orbit) is a private aerospace company, headquartered in Italy. D-Orbit is mainly active in private spaceflight and space tug services
D-Orbit
Function describing an electron in an atom
{\displaystyle m_{s}} . The simple names s orbital, p orbital, d orbital, and f orbital refer to orbitals with angular momentum quantum number ℓ = 0, 1, 2
Atomic_orbital
Curved path of an object around a point
mechanics, an orbit is the curved trajectory of an object under the influence of an attracting force. Alternatively, it is known as an orbital revolution
Orbit
Orbit around Earth between 160 and 2000 km
A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less
Low_Earth_orbit
Spacecraft used to transfer cargo from one orbit to another
a type of spacecraft used to transfer spaceborne cargo from one orbit to another orbit with different energy characteristics. The term can include expendable
Space_tug
Type of geocentric orbit
A Sun-synchronous orbit (SSO), also called a heliosynchronous orbit, is a nearly polar orbit around a planet, in which the satellite passes over any given
Sun-synchronous_orbit
Kepler orbit with an eccentricity of less than one
elliptical orbit or eccentric orbit is an orbit with an eccentricity of less than 1;[citation needed] this includes the special case of a circular orbit, with
Elliptic_orbit
Space tug by D-Orbit
satellite platform developed, manufactured, and operated by Italian company D-Orbit. The platform features a customizable 64U satellite dispenser capable of
ION_Satellite_Carrier
Mixing (superposition) of atomic orbitals
In chemistry, orbital hybridisation (or hybridization) is the concept of mixing atomic orbitals to form new hybrid orbitals (with different energies,
Orbital_hybridisation
Periodic, three-dimensional orbit
Halo orbit A halo orbit is a periodic, non-planar orbit associated with one of the L1, L2 or L3 Lagrange points in the three-body problem of orbital mechanics
Halo_orbit
Celestial orbit whose trajectory is a conic section in the orbital plane
In celestial mechanics, a Kepler orbit (or Keplerian orbit, named after the German astronomer Johannes Kepler) is the motion of one body relative to another
Kepler_orbit
Series of chemical elements
colours than d–d transitions. d–d transitions. An electron jumps from one d orbital to another. In complexes of the transition metals the d orbitals do not
Transition_metal
British space startup
June 2025, Magdrive launched its first two thrusters into orbit in collaboration with D-Orbit. Magdrive was founded in 2019 by Mark Stokes and plasma physicist
Magdrive
Field of classical mechanics concerned with the motion of spacecraft
Orbital mechanics or astrodynamics is the application of ballistics and celestial mechanics to rockets, satellites, and other spacecraft. The motion of
Orbital_mechanics
Transfer manoeuvre between two orbits
astronautics, the Hohmann transfer orbit (/ˈhoʊmən/) is an orbital maneuver used to transfer a spacecraft between two orbits of different altitudes around
Hohmann_transfer_orbit
Process that leads to gradual decrease of the distance between two orbiting bodies
Orbital decay is a gradual decrease of the distance between two orbiting bodies at their closest approach (the periapsis) over many orbital periods. These
Orbital_decay
Fifth planet from the Sun
Earth and a tenth that of the Sun. Jupiter orbits the Sun at a distance of 5.20 AU (778.5 Gm), with an orbital period of 11.86 years. It is the third-brightest
Jupiter
Time an astronomical object takes to complete one orbit around another object
The orbital period (also revolution period) is the amount of time a given astronomical object takes to complete one orbit around another object. In astronomy
Orbital_period
Largest dwarf planet
ring of bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most-massive known object to directly orbit the Sun. It is the largest
Pluto
Reason behind some elements' anomalous behaviour
The d-block contraction (sometimes called scandide contraction) is a term used in chemistry to describe the effect of having full d orbitals on the period
D-block_contraction
Theory in condensed matter physics
(CFT) describes the breaking of degeneracies of electron orbital states, usually d or f orbitals, due to a static electric field produced by a surrounding
Crystal_field_theory
Sixth planet from the Sun
less than a third of its mass. Saturn orbits the Sun at a distance of 9.59 AU (1,434 million km), with an orbital period of 29.45 years. Saturn's interior
Saturn
Goldilocks terrestrial planet orbiting TOI-700
TOI-700 d is a dense, rocky, near-Earth-sized exoplanet orbiting within the habitable zone of the red dwarf TOI-700. It is located roughly 101.4 light-years
TOI-700_d
Molecular geometry of five coplanar atoms
Certain ligands (such as porphyrins) stabilize this geometry. A general d-orbital splitting diagram for square planar (D4h) transition metal complexes can
Square planar molecular geometry
Square_planar_molecular_geometry
Type of chemical bond
axis. One common form of this sort of bonding involves p orbitals themselves, though d orbitals also engage in pi bonding. This latter mode forms part of
Pi_bond
Molecular orbital theory applied to transition metal complexes
crystal field theory, which describe the loss of degeneracy of metal d orbitals in transition metal complexes. John Stanley Griffith and Leslie Orgel
Ligand_field_theory
Type of co-orbital motion of a small orbiting body relative to a larger orbiting body
horseshoe orbit of (419624) 2010 SO16 around the Earth-Sun system over 900 years In celestial mechanics, a horseshoe orbit is a type of co-orbital motion
Horseshoe_orbit
Ion or molecule bound to a metal atom
surrounding, the d-orbitals again split into two sets, but this time in reverse order: 2 orbitals of low energy: dz2 and dx2−y2 and 3 orbitals of high energy:
Ligand
Cavity or socket of the skull in which the eye and its appendages are situated
vertebrate anatomy, the orbit is the cavity or socket/hole of the skull in which the eye and its appendages are situated. "Orbit" can refer to the bony
Orbit_(anatomy)
Circular orbit above Earth's Equator and following the direction of Earth's rotation
A geostationary orbit, also referred to as a GEO or GSO, is a circular geosynchronous orbit 35,786 km (22,236 mi) in altitude above Earth's equator, 42
Geostationary_orbit
Description of the electron configuration
version based on molecular orbital theory. However the d electron count of an atom in a complex is often different from the d electron count of a free atom
D_electron_count
Set of adjacent groups
is named after its characteristic orbital: s-block, p-block, d-block, f-block and g-block. The block names (s, p, d, and f) are derived from the spectroscopic
Block_(periodic_table)
Equilibrium points near two orbiting bodies
as orbit corrections, and hence fuel requirements, needed to maintain the desired orbit are kept at a minimum. For any combination of two orbital bodies
Lagrange_point
Molecule containing main group elements with more than eight valence electrons
contribution of the d-function to the molecular wavefunction is large. These facts were historically interpreted to mean that d-orbitals must be involved
Hypervalent_molecule
Type of chemical bond
their name refers to d orbitals, since the orbital symmetry of the δ bond is the same as that of the usual (4-lobed) type of d orbital when seen down the
Delta_bond
Atomic model
solid-state and condensed matter physics, the so-called atomic orbitals, or spin-orbitals, as they appear in textbooks on quantum physics, are often partially
Cubic_harmonic
build first in-orbit servicing mission with D-Orbit". www.esa.int. Retrieved 18 June 2025. "RISE: ESA's mission extender in geostationary orbit". www.esa.int
List of European Space Agency programmes and missions
List_of_European_Space_Agency_programmes_and_missions
Form of interaction between two atoms
The electrons are partially transferred from a d-orbital of the metal to anti-bonding molecular orbitals of CO (and its analogs). This electron-transfer
Pi_backbonding
Type of orbit
mechanics a parabolic trajectory is a Kepler orbit with the eccentricity (e) equal to 1 and is an unbound orbit that is exactly on the border between elliptical
Parabolic_trajectory
Satellite orbit with high inclination
A polar orbit is one in which a satellite passes above or nearly above both poles of the body being orbited (usually a planet such as the Earth, but possibly
Polar_orbit
First planet from the Sun
days) and sidereal day (58.65 Earth days) are in a 3:2 ratio, in a spin–orbit resonance. Consequently, one solar day (sunrise to sunrise) on Mercury lasts
Mercury_(planet)
Amount by which an orbit deviates from a perfect circle
value of 0 is a circular orbit, values between 0 and 1 form an elliptic orbit, 1 is a parabolic (escape orbit or capture orbit), and greater than 1 is
Orbital_eccentricity
Extrasolar planet in the Andromeda constellation
Andromedae d (υ Andromedae d, abbreviated Upsilon And d, υ And d), formally named Majriti /mædʒˈraɪti/, is a super-Jupiter exoplanet orbiting within the
Upsilon_Andromedae_d
Orbit of an object around the Moon
spaceflight, a lunar orbit (also known as a selenocentric orbit) is an orbit by an object around Earth's Moon. In general these orbits are not circular.
Lunar_orbit
Gas giant exoplanet
TOI-375 d is a gas giant exoplanet orbiting the evolved K-type star TOI-375, located approximately 396 parsecs (about 1,290 light-years) from Earth. The
TOI-375_d
Model in organometallic chemistry
The alkene donates electron density into a π-acid metal d-orbital from a C–C π bonding orbital between the carbon atoms, allowing the alkene to behave
Dewar–Chatt–Duncanson_model
Orbit keeping the satellite at a fixed longitude above the equator
A geosynchronous orbit (sometimes abbreviated GEO) is an Earth-centered orbit with an orbital period that matches Earth's rotation on its axis, 23 hours
Geosynchronous_orbit
Modular space station in low Earth orbit
The International Space Station (ISS) is a space station in low Earth orbit (LEO). It is the product of the International Space Station program and is
International_Space_Station
Retrieved 17 February 2023. "ION "Second Star to the Right" mission roadmap". D-Orbit. 3 January 2023. Retrieved 3 January 2023. Krebs, Gunter (7 February 2023)
List of spaceflight launches in January–June 2023
List_of_spaceflight_launches_in_January–June_2023
Quasi-periodic orbital trajectory
trajectory In orbital mechanics, a Lissajous orbit (pronounced [li.sa.ʒu]), named after Jules Antoine Lissajous, is a quasi-periodic orbital trajectory that
Lissajous_orbit
Third planet from the Sun
perpendicular to its orbital plane around the Sun, producing seasons. Earth is orbited by one permanent natural satellite, the Moon, which orbits Earth at 384
Earth
This article lists orbital and suborbital launches during the first half of the year 2022. For all other spaceflight activities, see 2022 in spaceflight
List of spaceflight launches in January–June 2022
List_of_spaceflight_launches_in_January–June_2022
Satellite Internet constellation
"Mission Starfield". D-Orbit. 31 January 2023. Archived from the original on 24 March 2023. Retrieved 31 January 2023. "D-Orbit Signs In-Orbit Validation Contract
List of Starlink and Starshield launches
List_of_Starlink_and_Starshield_launches
Dwarf planet in the asteroid belt
Ceres is a dwarf planet in the main asteroid belt between the orbits of Mars and Jupiter. It was the first object identified in the asteroid belt, discovered
Ceres_(dwarf_planet)
British orbital rocket of the company Orbex
to launch their communications satellites and by Italian in-orbit logistics company D-Orbit for two other launches. European Launcher Challenge – Space
Prime_(rocket)
British musician and record producer
Mark Wainwright (born 15 December 1956), known professionally as William Orbit, is an English musician and record producer who has sold 200 million recordings
William_Orbit
Notation for conserved quantities in physics and chemistry
is called s orbital, ℓ = 1, p orbital, ℓ = 2, d orbital, and ℓ = 3, f orbital. The value of ℓ ranges from 0 to n − 1, so the first p orbital (ℓ = 1) appears
Quantum_number
Eighth planet from the Sun
Neptune is the eighth and farthest known planet orbiting the Sun. It is the fourth-largest planet in the Solar System by diameter, the third-most-massive
Neptune
Chemical rule of thumb
three p and one d orbitals, or six bonds by using one s, three p and two d orbitals. To form five bonds, the one s, three p and one d orbitals combine to form
Octet_rule
Tabular arrangement of the chemical elements
but the 3p orbitals experience strong repulsion from the 2p orbitals, which have similar angular charge distributions. Thus higher s-, p-, d-, and f-subshells
Periodic_table
Sculpture and observation tower in London, England
The ArcelorMittal Orbit (often referred to as the Orbit Tower or its original name, Orbit) is a 114.5-metre (376-foot) sculpture and observation tower
ArcelorMittal_Orbit
Elliptical orbit used to move a spacecraft from one circular orbit to another
In orbital mechanics, a transfer orbit is an intermediate elliptical orbit that is used to move a spacecraft in an orbital maneuver from one circular
Transfer_orbit
Compound with a metal center bound to ligands
either d–d transitions or charge transfer bands. In a d–d transition, an electron in a d orbital on the metal is excited by a photon to another d orbital of
Coordination_complex
The Moon's circuit around Earth
The orbit of the Moon is, while stable and known, highly complex, and as such still studied by lunar theory. Most models describe the Moon's orbit geocentrically
Orbit_of_the_Moon
Potential configurations of electrons
field theory (a more advanced version based on molecular orbital theory). The Δ of the d orbitals plays an important role in the electron spin state of a
Spin_states_(d_electrons)
Motor vehicle
Orbit would be developed further into the Italdesign Machimoto, shown the same year. Inside it featured a unique digital instrument cluster. "VW (D)
Volkswagen_Orbit_(1986)
Regular and periodic mutual gravitational influence of orbiting bodies
mechanics, orbital resonance occurs when orbiting bodies exert regular, periodic gravitational influence on each other, usually because their orbital periods
Orbital_resonance
Mode of arrangement of electrons in different shells of an atom
atom or molecule (or other physical structure) in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s2 2s2 2p6
Electron_configuration
American chemist (1931–2017)
show aromatic character-primarily as a result of the nodes present in d-orbitals. Straight chain analogs were chosen based on the comparable acidity, combined
Ronald_Breslow
Relativistic interaction in quantum physics
In quantum mechanics, the spin–orbit interaction (also called spin–orbit effect or spin–orbit coupling) is a relativistic interaction of a particle's spin
Spin–orbit_interaction
Red dwarf star in the constellation Pictor
TOI-270 b and c orbit near a 5:3 resonance, while TOI-270 c and d orbit near a 2:1 resonance. Observations of the outermost planet, TOI-270 d, by the Hubble
TOI-270
Three missions to Mars were launched in 2020, including two rovers, two orbiters, and a lander. NASA has launched the Mars 2020 mission, which includes
2020_in_spaceflight
Natural satellites of the planet Neptune
that its orbit is retrograde to Neptune's rotation and inclined relative to Neptune's equator, which suggests that it did not form in orbit around Neptune
Moons_of_Neptune
Planetary system consisting of the Sun and objects orbiting it
System is the gravitationally bound system of the Sun and the masses that orbit it, most prominently its eight planets, of which Earth is one. The Solar
Solar_System
Laws describing planetary orbits
astronomy, Kepler's laws of planetary motion give good approximations for the orbits of planets around the Sun. They were published by Johannes Kepler from 1608
Kepler's laws of planetary motion
Kepler's_laws_of_planetary_motion
Sub-Earth orbiting Proxima Centauri
Proxima Centauri d (also called Proxima d) is a confirmed exoplanet orbiting the red dwarf star Proxima Centauri, the closest star to the Sun and part
Proxima_Centauri_d
Chemical bond involving eight electrons
conformation as shown at left. The delta bonding orbital is then formed by overlap of the d orbitals on each rhenium atom, which are perpendicular to
Quadruple_bond
Inner-shell electron of an atom
from 1 to 8 (ns and np orbitals). For transition metals, the number of valence electrons ranges from 3 to 12 (ns and (n−1)d orbitals). For lanthanides and
Core_electron
Energy needed to remove an electron
spin-orbit effects. Special case: decrease from radium ( 88Ra: 5.27 eV) to actinium ( 89Ac: 5.17 eV), which is a switch from an s to a d orbital. However
Ionization_energy
Parameters that define a specific orbit
Kepler orbit. There are many different ways to mathematically describe the same orbit, but certain schemes are commonly used in astronomy and orbital mechanics
Orbital_elements
Natural satellite orbiting Earth
orbits around Earth at an average distance of 384,399 kilometers (238,854 mi), a distance roughly 30 times the width of Earth. It completes an orbit (lunar
Moon
Set of points linked through the evolution function of a dynamical system
In mathematics, specifically in the study of dynamical systems, an orbit is a collection of points related by the evolution function of the dynamical
Orbit_(dynamics)
astrodynamics, orbit phasing is the adjustment of the time-position of spacecraft along its orbit, usually described as adjusting the orbiting spacecraft's
Orbit_phasing
Molecular orbital theory
electronegative and have frontier orbitals below those of the d orbitals of electropositive metals. Towards the right of the d-block, when approaching the
Inverted_ligand_field_theory
1961–1972 American crewed lunar exploration program
simple Earth-orbiting mission, ASPO Manager George Low suggested the bold step of sending Apollo 8 to orbit the Moon instead, deferring the D mission to
Apollo_program
Exoplanet orbiting 82 G. Eridani
HD 20794 d (82 G. Eridani d) is an exoplanet, possibly rocky, orbiting the solar-type star 82 G. Eridani. It is at least five times more massive than
HD_20794_d
Large, round non-stellar astronomical object
a large, rounded astronomical body that is generally required to be in orbit around a star, stellar remnant, or brown dwarf, and is not one itself. The
Planet
Spaceflight where the spacecraft does not go into orbit
velocity to go into low Earth orbit, and then de-orbit before completing their first full orbit, are not considered sub-orbital. Examples of this include
Sub-orbital_spaceflight
Type of high-latitude satellite orbit
A Molniya orbit (Russian: Молния, IPA: [ˈmolnʲɪjə] , "Lightning") is a type of satellite orbit designed to provide communications and remote sensing coverage
Molniya_orbit
Second planet from the Sun
brightest "morning star" or "evening star". Venus orbits closer to the Sun than the Earth does. The orbits of Venus and Earth make the two planets approach
Venus
Chemical property of transition metals
the valence orbitals in the electron configuration of transition metals consist of five (n−1)d orbitals, one ns orbital, and three np orbitals, where n is
18-electron_rule
Mathematical function
orbitals (also known as Gaussian type orbitals, GTOs or Gaussians) are functions used as atomic orbitals in the linear combination of atomic orbitals
Gaussian_orbital
Configuration of two or more astronomical objects
astronomy, a co-orbital configuration is a configuration of two or more astronomical objects (such as asteroids, moons, or planets) orbiting at the same,
Co-orbital_configuration
Family of American missiles and space launch vehicles
LV-3B was used for the orbital element of Project Mercury, launching four crewed Mercury spacecraft into low Earth orbit. Atlas D launches were conducted
Atlas_(rocket_family)
Spectroscopic technique
absorption caused by the excitation of a metal 2p electron to unfilled d orbitals (e.g. 3d for first-row transition metals), which creates a characteristic
Metal_L-edge
Relative directions of orbit or rotation
Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is
Retrograde and prograde motion
Retrograde_and_prograde_motion
Most common type of rocket, used to launch satellites
Vehicle Dynamics." Orbital Mechanics for Engineering Students. 2nd ed. Daytona Beach: Elsevier, 2010. Print [Nakhjiri, Navid, Ph.D, 2014. Presented at
Multistage_rocket
1970 Soviet test spaceflight
N1/L3 spacecraft's Block D lunar orbit insertion/descent stage by simulating the lunar orbit insertion burn, the lunar orbit circularization burn and
Kosmos_382
Exoplanet orbiting G-type star HD 63433
HD 63433 d (TOI-1726 d) is a confirmed exoplanet orbiting HD 63433, a Sun-like star located 73 light-years away in the constellation Gemini. Its radius
HD_63433_d
Most massive dwarf planet
trans-Neptunian object (TNO) in the scattered disk and has a high-eccentricity orbit. Eris was discovered in January 2005 by a Palomar Observatory–based team
Eris_(dwarf_planet)
D ORBIT
D ORBIT
Boy/Male
Scottish
Son of the ba!d man.
Surname or Lastname
English
English : variant (with excrescent -d) of Simmons.
Male
Hungarian
Hungarian name ÃRPÃD means "seed."
Surname or Lastname
English
English : patronymic from Simon, with an excrescent -d.
Boy/Male
Muslim
Splendors, Pl of bahjah, D
Male
Hungarian
Hungarian name derived from Latin Alfredus, ALFRÉD means "elf counsel."
Boy/Male
Indian
Splendors, Pl of bahjah, D
Girl/Female
Indian
Proper name name of grand D
Girl/Female
American, Australian, British, English
Stone of the Side; Combination of Initials J and D; The Gemstone Jade
Boy/Male
Muslim
The loving one
Surname or Lastname
English
English : variant of Senior, with excrescent -d.
Girl/Female
Hindu, Indian
Every Part or Element of D Earth
Male
Hungarian
Hungarian form of German Konrad, KONRÃD means "bold counsel."
Girl/Female
Muslim
Proper name name of grand D
Boy/Male
Indian
The loving one
Boy/Male
English American
A name beginning with D, also frequently used as an independent name.
Boy/Male
American, Australian, British, English
Phonetic Name Based on Initials; Combination of Initials J and D
Boy/Male
Muslim/Islamic
Approve(d) Accept(ed)
Biblical
the light of redemption
Female
Irish
Pet form of Irish Gaelic BrÃghid, BRÃD means "exalted one."
D ORBIT
D ORBIT
Girl/Female
English American
Royal valley, referring to Kent in England.
Boy/Male
Arabic, Muslim
Liberated; Free
Boy/Male
American, Australian, British, Christian, Danish, Dutch, English, Finnish, French, German, Greek, Hebrew, Irish, Latin, Swedish, Swiss
Gift of the Lord
Boy/Male
English American Welsh
Famous friend.
Girl/Female
Indian
Girl/Female
British, English, French, Jamaican
Noble Strength; Nobility
Boy/Male
Hindu, Indian
All-victorious
Girl/Female
Latin
Flower.
Girl/Female
Gujarati, Hindu, Indian, Marathi, Tamil
Garland of Flowers
Boy/Male
Afghan, Arabic, Indian, Muslim, Sindhi
Champion; Spring
D ORBIT
D ORBIT
D ORBIT
D ORBIT
D ORBIT
n.
A subtonic sound or element; a vocal consonant, as b, d, g, n, etc.; a subvocal.
n.
Same as Redfish (d).
n.
The action of the organs in producing such sounds; as, to give a trill to the tongue. d
prep.
In the place of; in the stead; as, A. B. was appointed postmaster vice C. D. resigned.
n.
The fifth tone of the scale; thus G is the dominant of C, A of D, and so on.
n.
An earthnut, or groundnut. See Groundnut (d).
imp. & p. p.
of Review
n.
See Groundnut (d).
n.
A cetacean of the genus Delphinus and allied genera (esp. D. delphis); the true dolphin.
a.
A purple dye obtained from the plant turnsole. See def. 1 (d).
n.
One who holds the tenets of Arminius, a Dutch divine (b. 1560, d. 1609).
n.
A fruit tree (D. zibethinus, the only species known) of the Indian Archipelago. It bears the durian.
n.
Same as Drum, n., 2(d).
n.
The sclerotic coat of the eye. See Illust. of Eye (d).
a.
Made by complete closure of the mouth organs; shut; -- said of certain consonants (p, b, t, d, etc.).
n.
A white, crystalline, bitter substance, regarded as a glucoside, and extracted from Daphne mezereum and D. alpina.