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

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1083157149179801 6.5676e-08  
a 3.167414821926312 4.2868e-08 AU
q 2.824334021047557 2.2027e-07 AU
i 30.64490088123776 7.1912e-06 deg
node 84.5119070763327 1.3576e-05 deg
peri 295.3399158737 3.4556e-05 deg
M 330.007498365411 3.5531e-05 deg
tp 2457172.040248273250
(2015-May-29.54024827)
0.0002042 JED
period 2058.997616495962
5.64
4.18e-05
1.144e-07
d
yr
n .1748423587845888 3.5495e-09 deg/d
Q 3.510495622805067 4.7511e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      813  
   data-arc span      21035 days (57.59 yr)  
   first obs. used      1957-05-29  
   last obs. used      2014-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49018  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 13:45:01  

Additional Information
 Earth MOID = 1.93527 AU 
 T_jup = 2.977 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.1 mag n/a MPO313442  
diameter diameter 57.98 km 2.3 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 13
rotation period rot_per 12.99 h n/a LCDB (Rev. 2015-Feb); 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]
geometric albedo albedo 0.0526   0.004 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 13
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 | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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