This is a list of Aten asteroids, a group of near-Earth objects. As of January 2017, there are 1125 known Atens,[1] most of which remain provisionally designated without a number,[2] as they have not been observed at two or more oppositions. The list is divided into named members, brightest, notable and other record holding Aten asteroids. For a list of existing articles, see Aten asteroids (category).

Named Atens

As of July 2020, a total of thirteen Aten asteroids have received a name. They are listed in chronological order of discovery.

Number Name Year Discoverer
2062Aten1976Eleanor F. Helin
2340Hathor1976Charles T. Kowal
2100Ra-Shalom1978Eleanor F. Helin
3362Khufu1984R. Scott Dunbar, Maria A. Barucci
3554Amun1986Carolyn S. Shoemaker, Eugene M. Shoemaker
3753Cruithne1986J. Duncan Waldron
5381Sekhmet1991Carolyn S. Shoemaker
136818Selqet1997Roy Tucker
326290Akhenaten1998Roy Tucker
66391Moshup1999LINEAR
99942Apophis2004Roy Tucker, David J. Tholen and Fabrizio Bernardi
398188Agni2010WISE
367943Duende2012Observatorio Astronómico de La Sagra (OAM)

The February 15, 2013 Earth encounter shortened 367943 Duende orbital period to about 317 days, changing its orbital class from Apollo to Aten.[3]

Brightest Atens

The following lists Aten asteroids thought to be larger than 2 kilometers across. Assuming an albedo of 0.15, this converts to an absolute magnitude of about 16.2

Designation Discovery date Absolute magnitude Diameter (km) Catalog
(66146) 1998 TU31998/10/1314.53–7list entry
(137170) 1999 HF11999/04/2014.53–7list entry
3753 Cruithne1986/10/1015.62–5list entry
(152931) 2000 EA1072000/03/1515.82–4list entry
(105140) 2000 NL102000/07/1015.82–4list entry
3554 Amun1986/03/0415.822.33–2.82list entry
(87684) 2000 SY22000/09/2016.02–4list entry
2100 Ra-Shalom1978/09/1016.052.05–2.59list entry
(96590) 1998 SB1998/12/0116.21–3list entry

Selection of designated Atens

NameYearDiscoverer ACatalog
(5590) 1990 VA1990Spacewatchlist entry
(5604) 1992 FE1992Robert H. McNaughtlist entry
(33342) 1998 WT241998LINEARlist entry
(65679) 1989 UQ1989Christian Pollaslist entry
(66063) 1998 RO11998LINEARlist entry
(66146) 1998 TU31998LINEARlist entry
66391 Moshup1999LINEARlist entry
(66400) 1999 LT71999LINEARlist entry
(68347) 2001 KB672001LINEARlist entry
(85770) 1998 UP11998LINEARlist entry
(85953) 1999 FK211999LINEARlist entry
(85989) 1999 JD61999LONEOSlist entry
(86450) 2000 CK332000LINEARlist entry
(86667) 2000 FO102000LINEARlist entry
(87309) 2000 QP2000LINEARlist entry
(87684) 2000 SY22000LINEARlist entry
(88213) 2001 AF22001LINEARlist entry
(96590) 1998 XB1998BAO Schmidt CCD Asteroid Programlist entry
(99907) 1989 VA1989Carolyn S. Shoemaker, Eugene M. Shoemakerlist entry
(137924) 2000 BD192000LINEARlist entry
2002 AA292002LINEARMPC
2003 YN1072003LINEARMPC
2004 FH2004LINEARMPC
2004 FU1622004LINEARMPC
2013 BS452013Spacewatch, James V. ScottiMPC
2013 ND152013Pan-STARRSMPC
2014 HQ1242014NEOWISEMPC
2014 OL3392014EURONEARMPC
(A) LINEAR: Lincoln Near-Earth Asteroid Research

Record-holding Atens

The following is a list of current records for Aten asteroids

Discovery Records
Record Object Date
First Detected(363505) 2003 UC205 December 1954
First Confirmed2062 Aten7 January 1976
Physical Records
Record Object Absolute magnitude Diameter
Brightest(137170) 1999 HF114.54.3 km
Brightest (numbered)(66146) 1998 TU314.73.6 km
Brightest (named)3753 Cruithne15.13.3 km
Smallest (named)3362 Khufu18.3700 m
Dimmest2003 SW13029.15 m
Dimmest (numbered)(68347) 2001 KB6719.9505 m
Dimmest (named)2340 Hathor19.2210 m
Orbital Records
Perihelion Records Object q (AU) notes
Smallest(137924) 2000 BD190.092smallest of all asteroids
Smallest (named)2340 Hathor0.464
Largest (numbered)2062 Aten0.790
Largest2002 AA290.984Earth Co-Orbital
Semi-Major Axis Records Object a (AU) notes
Smallest594913 ꞌAylóꞌchaxnim0.55536Apohele asteroid, smallest semimajor axis of all asteroids[4]
Smallest2019 BE50.610
Smallest (numbered)66391 Moshup0.642
Smallest (named)2100 Ra-Shalom0.832
Largest (numbered)3753 Cruithne0.998Earth Co-Orbital
Largest(85770) 1998 UP10.999In Earth's Zone of Influence
Aphelion Records Object Q (AU) notes
Smallest(434326) 2004 JG60.973Apohele asteroid, smallest of all asteroids
Smallest (numbered)(33342) 1998 WT241.019smallest of all numbered asteroids
Smallest (named)2062 Aten1.143smallest of all named asteroids
Largest (named)3753 Cruithne1.511Earth Co-Orbital
Largest(66063) 1998 RO11.705In Earth's Zone of Influence, Binary
Eccentricity Records Object e notes
Smallest2002 AA290.013Earth Co-Orbital
Smallest (numbered)2062 Aten0.183
Largest (named)3753 Cruithne0.515Earth Co-Orbital
Largest(137924) 2000 BD190.895
Inclination Records Object i (deg) notes
Smallest2004 FH0.0°
Smallest (numbered)(65679) 1989 UQ1.3°
Smallest (named)2340 Hathor5.9°
Largest (numbered)5381 Sekhmet49.0°
Largest(333889) 1998 SV453.3°

References

  1. ↑ "Near-Earth Asteroid Discovery Statistics". 5 January 2017. Archived from the original on 13 May 2004. Retrieved 7 January 2017.
  2. ↑ "List Of Aten Minor Planets (by designation)". Minor Planet Center. Retrieved 7 January 2017.
  3. ↑ Paul Chodas and Don Yeomans (1 February 2013). "Asteroid 2012 DA14 To Pass Very Close to the Earth on February 15, 2013". NASA/JPL Near-Earth Object Program Office. Retrieved 17 February 2013.
  4. ↑ A kilometer-scale asteroid inside Venus’s orbit, 2020, arXiv:2009.04125
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