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JPL Small-Body Database Browser
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623 Chimaera (A907 BC)
Classification: Main-belt Asteroid          SPK-ID: 2000623
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 69 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1130439251085457 3.5131e-08  
a 2.460803854647114 7.8468e-09 au
q 2.182624927995565 8.5011e-08 au
i 14.126130576373 5.004e-06 deg
node 308.3263489157392 1.6511e-05 deg
peri 124.1623843879173 2.8814e-05 deg
M 81.71168980588368 2.3547e-05 deg
tp 2458280.466371471794
(2018-Jun-10.96637147)
9.1857e-05 TDB
period 1409.98315594568
3.86
6.7441e-06
1.846e-08
d
yr
n .2553221990503474 1.2212e-09 deg/d
Q 2.738982781298664 8.7338e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2168  
   data-arc span      40053 days (109.66 yr)  
   first obs. used      1909-09-12  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41045  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:11:02  

Additional Information
 Earth MOID = 1.22917 au 
 Jupiter MOID = 2.48888 au 
 T_jup = 3.440 
[ 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 10.97   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
diameter diameter 44.09 km 1.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
rotation period rot_per 14.635 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Fleenor, M.L. (2007) Minor Planet Bull. 34, 66-67.]
geometric albedo albedo 0.0372   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
B-V BV 0.714   0.067 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=10.59, mean=10.66, max.=10.73) deg.
U-B UB 0.324   0.063 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=10.73 deg.
Tholen spectral type spec_T XC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

623 Chimaera (A907 BC)          Discovered 1907-Jan-22 by Lohnert, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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