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JPL Small-Body Database Browser
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274 Philagoria
Classification: Main-belt Asteroid          SPK-ID: 2000274
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 .1194619991934309 3.5975e-08  
a 3.045410486572626 1.2204e-08 au
q 2.681599661482021 1.0947e-07 au
i 3.677540181733587 4.003e-06 deg
node 92.79480772586831 6.1949e-05 deg
peri 119.7223428872355 6.4184e-05 deg
M 230.689504781511 1.8565e-05 deg
tp 2459297.765952796611
(2021-Mar-24.26595280)
0.00010175 TDB
period 1941.186154941656
5.31
1.1668e-05
3.195e-08
d
yr
n .1854536202432477 1.1147e-09 deg/d
Q 3.409221311663231 1.3661e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2977  
   data-arc span      46274 days (126.69 yr)  
   first obs. used      1893-03-19  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46769  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:04:44  

Additional Information
 Earth MOID = 1.67805 au 
 Jupiter MOID = 1.56276 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 10.0   n/a MPO337242  
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. 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]
[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          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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