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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1084461350431656 9.4157e-08  
a 3.167831394148663 4.2542e-08 AU
q 2.824292322984837 3.0544e-07 AU
i 30.64608668160034 1.0232e-05 deg
node 84.51588322780975 1.7161e-05 deg
peri 295.3132741459333 5.5588e-05 deg
M 295.0744361714962 6.0253e-05 deg
tp 2457171.910984308447
(2015-May-29.41098431)
0.00034729 JED
period 2059.403822879705
5.64
4.1485e-05
1.136e-07
d
yr
n .1748078720649381 3.5214e-09 deg/d
Q 3.511370465312488 4.7156e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      723  
   data-arc span      20750 days (56.81 yr)  
   first obs. used      1957-05-29  
   last obs. used      2014-03-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51781  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:42:35  

Additional Information
 Earth MOID = 1.93474 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 10.00 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 13
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. 2013-Sep-12) 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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