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2906 Caltech (1983 AE2)
Classification: Main-belt Asteroid          SPK-ID: 2002906
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1038203592020746 4.7779e-08  
a 3.166196738682748 2.4677e-08 au
q 2.837481055968268 1.5365e-07 au
i 30.68343083121116 4.902e-06 deg
node 84.41034777906633 8.8178e-06 deg
peri 296.6120444688718 2.3147e-05 deg
M 318.2284087410209 2.2027e-05 deg
tp 2459239.272216882167
(2021-Jan-24.77221688)
0.00012603 TDB
period 2057.809996862469
5.63
2.4057e-05
6.586e-08
d
yr
n .174943265194012 2.0452e-09 deg/d
Q 3.494912421397228 2.7238e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2245  
   data-arc span      23080 days (63.19 yr)  
   first obs. used      1957-05-29  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37846  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:57:52  

Additional Information
 Earth MOID = 1.94357 au 
 Jupiter MOID = 1.98569 au 
 T_jup = 2.978 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.1   n/a MPO431529  
diameter diameter 58.678 km 0.659 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 12.9937 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2013) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.051   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B Xc   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2906 Caltech (1983 AE2)          Discovered 1983-Jan-13 by Shoemaker, C. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1983 AE2 = 1957 KJ = 1957 MA = 1974 LC = 1976 YS2 = 1983 CD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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