Amor asteroid

Short description: Group of near-Earth asteroids

Common orbital subgroups of Near-Earth Objects (NEOs)

The Amor asteroids are a group of near-Earth asteroids named after the archetype object 1221 Amor /ˈeɪmɔːr/. The orbital perihelion of these objects is close to, but greater than, the orbital aphelion of Earth (i.e., the objects do not cross Earth's orbit),[1] with most Amors crossing the orbit of Mars. The Amor asteroid 433 Eros was the first asteroid to be orbited and landed upon by a robotic space probe (NEAR Shoemaker).

## Contents

* 1 Definition
* 2 Populations
* 2.1 Outer Earth-grazer asteroids
* 2.2 Potentially hazardous asteroids
* 3 Lists
* 3.1 Prominent Amor asteroids
* 3.2 Named Amor asteroids
* 4 See also
* 5 References
* 6 External links

## Definition

Amor asteroid Eros visited by NEAR Shoemaker in 2000

The orbital characteristics that define an asteroid as being in the Amor group are:[2]

* The orbital period is greater than one year; i.e., the orbital semi-major axis (a) is greater than 1.0 AU (a > 1.0 AU);
* The orbit does not cross that of Earth; i.e., the orbital perihelion (q) is greater than Earth's orbital aphelion (q > 1.017 AU);
* The object is a near-Earth object (NEO); i.e., q < 1.3 AU.

## Populations

As of January 2025 there are 15,175 known Amor asteroids. Of those objects, 1414 are numbered, 83 are named, and 42 are designated as a potentially hazardous asteroid.[3][4]

### Outer Earth-grazer asteroids

An outer Earth-grazer asteroid is an asteroid that is normally beyond Earth's orbit, but which can get closer to the Sun than Earth's aphelion (1.0167 AU), and not closer than Earth's perihelion (0.9833 AU); i.e., the asteroid's perihelion is between Earth's perihelion and aphelion. Outer Earth-grazer asteroids are split between Amor and Apollo asteroids. Using the definition of Amor asteroids above, "Earth grazers" that never get closer to the Sun than Earth does (at any point along its orbit) are Amors, whereas those that do are Apollos.

### Potentially hazardous asteroids

To be considered a potentially hazardous asteroid (PHA), an object's orbit must, at some point, come within 0.05 AU of Earth's orbit, and the object itself must be sufficiently large/massive to cause significant regional damage if it impacted Earth. Most PHAs are either Aten asteroids or Apollo asteroids (and thus have orbits that cross the orbit of Earth), and as of November 2023 70 Amors are classified as a PHA, the named objects 2061 Anza, 3122 Florence, 3908 Nyx, and 3671 Dionysus.[5]

## Lists

For a list of articles about Amor asteroids, see Astronomy:Amor asteroids.

### Prominent Amor asteroids

Name | Year | Discoverer | Refs

|
|
|

3908 Nyx | 1980 | Hans-Emil Schuster | MPC * JPL
1221 Amor | 1932 | Eugène Delporte | MPC * JPL
1036 Ganymed | 1924 | Walter Baade | MPC * JPL
887 Alinda | 1918 | Max Wolf | MPC * JPL *
719 Albert | 1911 | Johann Palisa | MPC * JPL
433 Eros | 1898 | Gustav Witt | MPC * JPL

### Named Amor asteroids

This is a non-static list of named Amor asteroids.[6]

Designation | Prov. designation

|

433 Eros | 1898 DQ
719 Albert | 1911 MT
887 Alinda | 1918 DB
1036 Ganymed | 1924 TD
1221 Amor | 1932 EA1
1580 Betulia | 1950 KA
1627 Ivar | 1929 SH
1915 Quetzalcoatl | 1953 EA
1916 Boreas | 1953 RA
1917 Cuyo | 1968 AA
1943 Anteros | 1973 EC
1980 Tezcatlipoca | 1950 LA
2059 Baboquivari | 1963 UA
2061 Anza | 1960 UA
2202 Pele | 1972 RA
2368 Beltrovata | 1977 RA
2608 Seneca | 1978 DA
3102 Krok | 1981 QA
3122 Florence | 1981 ET3
3199 Nefertiti | 1982 RA
3271 Ul | 1982 RB
3288 Seleucus | 1982 DV
3352 McAuliffe | 1981 CW
3551 Verenia | 1983 RD
3552 Don Quixote | 1983 SA
Designation | Prov. designation

|

3553 Mera | 1985 JA
3671 Dionysus | 1984 KD
3691 Bede | 1982 FT
3757 Anagolay | 1982 XB
3908 Nyx | 1980 PA
3988 Huma | 1986 LA
4055 Magellan | 1985 DO2
4401 Aditi | 1985 TB
4487 Pocahontas | 1987 UA
4503 Cleobulus | 1989 WM
4947 Ninkasi | 1988 TJ1
4954 Eric | 1990 SQ
4957 Brucemurray | 1990 XJ
5324 Lyapunov | 1987 SL
5332 Davidaguilar | 1990 DA
5370 Taranis | 1986 RA
5620 Jasonwheeler | 1990 OA
5626 Melissabrucker | 1991 FE
5653 Camarillo | 1992 WD5
5751 Zao | 1992 AC
5797 Bivoj | 1980 AA
5863 Tara | 1983 RB
5869 Tanith | 1988 VN4
5879 Almeria | 1992 CH1
6050 Miwablock | 1992 AE
Designation | Prov. designation

|

6456 Golombek | 1992 OM
6569 Ondaatje | 1993 MO
7088 Ishtar | 1992 AA
7336 Saunders | 1989 RS1
7358 Oze | 1995 YA3
7480 Norwan | 1994 PC
8013 Gordonmoore | 1990 KA
8034 Akka | 1992 LR
8709 Kadlu | 1994 JF1
9172 Abhramu | 1989 OB
9950 ESA | 1990 VB
11284 Belenus | 1990 BA
13553 Masaakikoyama | 1992 JE
15745 Yuliya | 1991 PM5
15817 Lucianotesi | 1994 QC
16064 Davidharvey | 1999 RH27
16912 Rhiannon | 1998 EP8
18106 Blume | 2000 NX3
20460 Robwhiteley | 1999 LO28
21088 Chelyabinsk | 1992 BL2
52387 Huitzilopochtli | 1993 OM7
65803 Didymos | 1996 GT
96189 Pygmalion | 1991 NT3
154991 Vinciguerra | 2005 BX26
162011 Konnohmaru | 1994 AB1
Designation | Prov. designation

|

164215 Doloreshill | 2004 MF6
189011 Ogmios | 1997 NJ6
280244 Ati | 2002 WP11
452307 Manawydan | 1997 XV11
481984 Cernunnos | 2009 KL2
520585 Saci | 2014 OA2
605911 Cecily | 2016 XD1
679829 Sucellos | 2021 EC5
785648 Likho | 2015 RG36

## See also

* List of Amor asteroid records
* Apollo asteroid
* Aten asteroid
* Atira asteroid
* Alinda asteroid
* Arjuna asteroid
* List of minor planets

## References

1. ↑ "Amor asteroid". Созвездия.ру. http://www.sozvezdiya.ru/eng/a.php.
2. ↑ "NEO Groups". NASA/JPL Near-Earth Object Program Office. http://neo.jpl.nasa.gov/neo/groups.html.
3. ↑ "Small-Body Database Query". NASA - California Institute of Technology. https://ssd.jpl.nasa.gov/tools/sbdb_query.html#!#results.
4. ↑ "List of Amor Minor Planets". Center for Astrophysics. https://minorplanetcenter.net/iau/lists/Amors.html.
5. ↑ "List Of The Potentially Hazardous Asteroids (PHAs)". IAU - Minor Planet Center. https://www.minorplanetcenter.net/iau/lists/t_phas.html.
6. ↑ "List Of Amor Minor Planets (by designation)". Minor Planet Center. http://www.minorplanetcenter.org/iau/lists/Amors.html.

## External links

* List of Amor minor planets

* v
* t
* e

Asteroids

Main|

* Notable asteroids
* Physical characteristics
* dynamic method
* Impact avoidance
* Tracking
* Capture
* Gravitational keyhole
* Earth-crosser
* Close approaches
* Binary
* moon
* contact
* P–L

Distribution|

* Interior to Earth
* vulcanoids
* Mercury-crossers
* Venus-crossers
* Main-belt
* Kirkwood gap
* comets
* Trojans
* Venus trojan
* Earth
* Mars
* Jupiter
* Uranus trojan
* Neptune trojan
* Near-Earth
* Aten
* Amor
* Apollo
* Apohele
* Earth-crossers
* Between Earth and the main belt
* Mars crossers
* Mars trojans
* Outer Solar System, does not include distant minor planets
* Jupiter-crossers
* Jupiter trojan

Classification|

| Orbital|

* Group
* Family
* (list)

|

Spectral|

| Tholen|

* C-group
* B-type
* F-type
* G-type
* C-type
* S-type
* X-group
* M-type
* E-type
* P-type
* small classes
* A-type
* D-type
* J-type
* T-type
* Q-type
* R-type
* V-type

|

SMASS|

* C-group
* B-type
* C-type
* Cg
* Ch
* Cgh
* Cb
* S-group
* A-type
* Q-type
* R-type
* K-type
* L-type
* S-type
* Sa
* Sq
* Sr
* Sk
* Sl
* X-group
* X-type
* Xe
* Xc
* Xk
* small types
* T-type
* D-type
* Ld-type
* O-type
* V-type

Exploration|

* Asteroid Redirect Mission
* Asteroids visited by spacecraft
* Mining
* Ceres
* Colonization
* Near-Earth Object Surveillance Mission

Lists|

* Near-Earth
* Minor planets
* Lost
* Discovering observatories
* Space missions

* See also: Asteroids in fiction
* Asteroids in astrology
* occultation
* Comet
* Minor planet

* Category

* v
* t
* e

Small Solar System bodies

Minor planets|

* Designation
* Groups
* List
* Moon
* Meanings of names

Asteroid|

* Aten asteroid
* Asteroid belt
* Family
* Jupiter trojan
* Near-Earth
* Spectral types

Distant minor planet|

* Centaur
* Damocloid
* Neptune trojan
* Trans-Neptunian object
* Detached
* Kuiper belt
* Oort cloud
* Scattered disc

Comets|

* Extinct
* Great
* Halley-type
* Hyperbolic
* Long-period
* Lost
* Main-belt
* Near-parabolic
* Periodic
* Sungrazing

Other|

* Meteoroids

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/Amor asteroid. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:Amor_asteroid&oldid=4343446"
*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template