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JPL Small-Body Database Browser
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297 Caecilia
Classification: Main-belt Asteroid          SPK-ID: 2000297
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1416752625843223 4.1355e-08  
a 3.168825140044889 1.5862e-08 au
q 2.719881006245227 1.3395e-07 au
i 7.544388899821752 4.6435e-06 deg
node 331.9997439956632 3.138e-05 deg
peri 353.446562035028 3.4761e-05 deg
M 292.6374696201029 1.6942e-05 deg
tp 2458986.033153733268
(2020-May-16.53315373)
9.8131e-05 TDB
period 2060.372948599866
5.64
1.547e-05
4.235e-08
d
yr
n .1747256486960962 1.3119e-09 deg/d
Q 3.61776927384455 1.8109e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2736  
   data-arc span      43574 days (119.30 yr)  
   first obs. used      1900-05-02  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46182  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:07:14  

Additional Information
 Earth MOID = 1.70739 au 
 Jupiter MOID = 1.72182 au 
 T_jup = 3.174 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455774.5 (2011-Aug-01.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .143971232933273 4.1232e-08  
q 2.706907563109468 1.3309e-07 au
tp 2454881.291263494564
(2009-Feb-18.79126349)
8.9446e-05 TDB
node 332.1380369023316 3.1334e-05 deg
peri 354.5795076377105 3.463e-05 deg
i 7.556417054781784 4.6492e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2736  
   data-arc span      43574 days (119.30 yr)  
   first obs. used      1900-05-02  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46182  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:07:14  

Additional Information
 Jupiter MOID = 1.72182 au 
 T_jup = 3.174 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.700046345602719E-15 -5.458762954281652E-15 7.718253566678142E-14 -4.18248834582733E-16 5.941036171238252E-15 -2.116576186413518E-17
q -5.458762954281652E-15 1.771243398986812E-14 -1.684674062894063E-13 1.69816172776084E-15 6.434190612801787E-15 3.01663855284589E-16
tp 7.718253566678142E-14 -1.684674062894063E-13 8.000624708242838E-9 -4.401745788698499E-12 1.33965160291309E-9 9.415471536915713E-13
node -4.18248834582733E-16 1.69816172776084E-15 -4.401745788698499E-12 9.818228986939597E-10 -9.736303049349858E-10 -2.298760092742632E-12
peri 5.941036171238252E-15 6.434190612801787E-15 1.33965160291309E-9 -9.736303049349858E-10 1.199227058362497E-9 2.427487850107368E-12
i -2.116576186413518E-17 3.01663855284589E-16 9.415471536915713E-13 -2.298760092742632E-12 2.427487850107368E-12 2.161528328404617E-11

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-January); 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          Discovered 1890-Sep-09 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 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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