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251 Sophia (A885 TA)
Classification: Main-belt Asteroid          SPK-ID: 2000251
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09492135439231751 1.4868e-08  
a 3.105260290597505 1.142e-08 au
q 2.810504778073308 5.0523e-08 au
i 10.52968288941878 5.3624e-07 deg
node 155.9069140652282 1.842e-06 deg
peri 286.9113089215786 9.9974e-06 deg
M 228.1512669655457 1.272e-05 deg
tp 2459932.513181460009
(2022-Dec-19.01318146)
7.2444e-05 TDB
period 1998.690008319911
5.47
1.1026e-05
3.019e-08
d
yr
n .1801179765253413 9.9363e-10 deg/d
Q 3.400015803121702 1.2504e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3161  
   data-arc span      49345 days (135.10 yr)  
   first obs. used      1885-10-04  
   last obs. used      2020-11-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42681  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:34:41  

Additional Information
 Earth MOID = 1.84919 au 
 Jupiter MOID = 1.81912 au 
 T_jup = 3.188 
[ 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 9.94   n/a E2021B10  
diameter diameter 27.495 km 0.197 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 20.216 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Holliday, B. (2001) Minor Planet Bull. 28, 26-28.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2008) 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]
[Hanus, J.; Delbo, M.; Ali-Lagoa, V.; Bolin, B.; et al. (2016) Astron. Astrophys., submitted.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[Hanus, J.; Delbo, M.; Ali-Lagoa, V.; Bolin, B.; et al. (2018) Icarus 299, 84-96.]
geometric albedo albedo 0.234   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

251 Sophia (A885 TA)          Discovered 1885-Oct-04 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A885 TA = 1950 RH1 = 1953 FN1 = A907 UA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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