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297 Caecilia (A890 RA)
Classification: Main-belt Asteroid          SPK-ID: 2000297
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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1402916309956561 3.9571e-08  
a 3.166011032318764 1.3572e-08 au
q 2.721846180844524 1.2566e-07 au
i 7.55281776079352 4.5023e-06 deg
node 331.887399516363 2.84e-05 deg
peri 353.3685676982751 3.141e-05 deg
M 2.634295602396341 1.3598e-05 deg
tp 2458985.443325257025
(2020-May-15.94332526)
7.7709e-05 TDB
period 2057.628954981506
5.63
1.3231e-05
3.622e-08
d
yr
n .174958657696006 1.125e-09 deg/d
Q 3.610175883793004 1.5476e-08 au
  Orbit Determination Parameters
   # obs. used (total)      4242  
   data-arc span      44005 days (120.48 yr)  
   first obs. used      1900-05-02  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37608  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:31:10  

Additional Information
 Earth MOID = 1.71021 au 
 Jupiter MOID = 1.73129 au 
 T_jup = 3.175 
[ 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 9.1   n/a MPO435697  
diameter diameter 39.48 km 1.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 4.163 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Cooney, W.R. (2005) Minor Planet Bull. 32, 15-16.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Collaborative Asteroid Lightcurve Link (CALL) (2011) http://www.minorplanetobserver.com/DATA/submissions_results.htm]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.1796   0.018 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6

297 Caecilia (A890 RA)          Discovered 1890-Sep-09 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A890 RA = 1935 PB = 1947 SB = 1955 BK1 = A924 RA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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