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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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1402916213353142 4.1087e-08  
a 3.166011040362803 1.6345e-08 au
q 2.7218462183448 1.3274e-07 au
i 7.552816758166574 4.5792e-06 deg
node 331.887414898442 3.1259e-05 deg
peri 353.3685581918663 3.4632e-05 deg
M 2.63428679239208 1.6977e-05 deg
tp 2458985.443375554419
(2020-May-15.94337555)
9.6987e-05 TDB
period 2057.628962823384
5.63
1.5934e-05
4.362e-08
d
yr
n .174958657029217 1.3548e-09 deg/d
Q 3.610175862380806 1.8638e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3865  
   data-arc span      43826 days (119.99 yr)  
   first obs. used      1900-05-02  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38929  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:02:46  

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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