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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1083157150656552 6.5705e-08  
a 3.167414821971374 4.2912e-08 AU
q 2.824334020619989 2.2032e-07 AU
i 30.64490044999413 7.202e-06 deg
node 84.51190728512286 1.3577e-05 deg
peri 295.3399157886626 3.4602e-05 deg
M 330.0074982525849 3.5609e-05 deg
tp 2457172.040248922212
(2015-May-29.54024892)
0.00020465 JED
period 2058.9976165399
5.64
4.1843e-05
1.146e-07
d
yr
n .1748423587808577 3.5531e-09 deg/d
Q 3.510495623322758 4.756e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      810  
   data-arc span      20975 days (57.43 yr)  
   first obs. used      1957-05-29  
   last obs. used      2014-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49025  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 12:51:32  

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 Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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 (675)
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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