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274 Philagoria (A888 GA)
Classification: Main-belt Asteroid          SPK-ID: 2000274
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 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1190514959865415 1.0821e-08  
a 3.04406578839417 1.0095e-08 au
q 2.681665202404393 3.3296e-08 au
i 3.677442379528849 8.0276e-07 deg
node 92.79139333632932 1.0616e-05 deg
peri 119.8816631229607 1.2851e-05 deg
M 341.7994513849873 9.6698e-06 deg
tp 2459298.575709004062
(2021-Mar-25.07570900)
5.2101e-05 TDB
period 1939.900603454282
5.31
9.6497e-06
2.642e-08
d
yr
n .1855765183839658 9.2312e-10 deg/d
Q 3.406466374383947 1.1297e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3604  
   data-arc span      44496 days (121.82 yr)  
   first obs. used      1899-05-18  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43055  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:37:01  

Additional Information
 Earth MOID = 1.67688 au 
 Jupiter MOID = 1.56359 au 
 T_jup = 3.225 
[ 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 10.05   n/a E2021B10  
diameter diameter 27.307 km 0.394 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 17.938 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F. (2010) Minor Planet Bull. 37, 148-149.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.237   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

274 Philagoria (A888 GA)          Discovered 1888-Apr-03 by Palisa, J. at Vienna
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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