2100 Ra-Shalom

2100 Ra-Shalom
Shape model of Ra-Shalom from its lightcurve
Discovery [1]
Discovered byE. F. Helin
Discovery sitePalomar Obs.
Discovery date10 September 1978
Designations
(2100) Ra-Shalom
Pronunciation/ˌrɑː ʃəˈloʊm/[2]
Named after
Ra and Shalom
(composed name)[3]
1978 RA · 1975 TB
NEO · Aten [1][4]
Orbital characteristics [1]
Epoch 7 November 2005 (JD 2453681.5)
Uncertainty parameter 0
Observation arc41.07 yr (14,999 days)
Aphelion1.1952 AU
Perihelion0.4688 AU
0.8320 AU
Eccentricity0.4365
0.76 yr (277 days)
104.56°
Inclination15.756°
170.88°
355.98°
Earth MOID0.1496 AU · 58.3 LD
Physical characteristics
1.98±0.05 km[5]
2.04 km[6]
2.22 km[7]
2.24 km[8]
2.3±0.2 km[9]
2.48 km[10]
2.78 km[11][12]
2.79 km[13]
19.79±0.03 h[14]
19.793±0.001 h[9]
19.797 h[15][a]
19.79981 h[16]
19.8201±0.00004 h[17]
19.89±0.05[18]
0.080[13]
0.082[11][12]
0.125[10]
0.13±0.03[9][8]
0.14±0.10[19]
0.16[6]
0.177±0.009[5]
C (Tholen)[1] · Xc (SMASS)[1]
C (CALL)[12] · K[9]
B–V = 0.712[1]
U–B = 0.310[1]
15.66±0.1 (R)[a] · 15.90[10] · 16.05[1][5] · 16.054±0.07[12][20] · 16.06±0.07[14] · 16.06[6] · 16.07[15] · 16.1[7] · 16.11[11]

2100 Ra-Shalom (prov. designation: 1978 RA) is an asteroid and near-Earth object of the Aten group on an eccentric orbit in the inner Solar System. It was discovered on 10 September 1978, by American astronomer Eleanor Helin at the Palomar Observatory, California, who named it in commemoration of the Camp David Peace Accords.[3][4] The C-type asteroid (Xc, K) has a rotation period of 19.8 hours and measures approximately 2.7 kilometers (1.7 miles) in diameter.

  1. ^ a b c d e f g h Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ "shalom". Dictionary.com Unabridged (Online). n.d.
  3. ^ a b Cite error: The named reference springer was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference MPC-Ra-Shalom was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference AKARI was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Harris-1998a was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Trilling-2010 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Harris-2011 was invoked but never defined (see the help page).
  9. ^ a b c d Cite error: The named reference Shepard-2008c was invoked but never defined (see the help page).
  10. ^ a b c Cite error: The named reference Harris-1998b was invoked but never defined (see the help page).
  11. ^ a b c Cite error: The named reference Delbo-2003 was invoked but never defined (see the help page).
  12. ^ a b c d Cite error: The named reference lcdb was invoked but never defined (see the help page).
  13. ^ a b Cite error: The named reference Delbo-2011 was invoked but never defined (see the help page).
  14. ^ a b Cite error: The named reference Harris-1992 was invoked but never defined (see the help page).
  15. ^ a b Cite error: The named reference Pravec-1998b was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference Kaasalainen-2004 was invoked but never defined (see the help page).
  17. ^ Cite error: The named reference Durech-2012 was invoked but never defined (see the help page).
  18. ^ Cite error: The named reference Warner-2017 was invoked but never defined (see the help page).
  19. ^ Cite error: The named reference Thomas-2011b was invoked but never defined (see the help page).
  20. ^ Cite error: The named reference Pravec-2012b was invoked but never defined (see the help page).


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