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JPL Small-Body Database Browser
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451 Patientia (A899 XA)
Classification: Main-belt Asteroid          SPK-ID: 2000451
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 116 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07447464583692197 3.281e-08  
a 3.061121589024388 6.3325e-09 au
q 2.833145642818041 1.0064e-07 au
i 15.23852133971559 3.5936e-06 deg
node 89.24400772839286 1.4125e-05 deg
peri 336.5832045893767 2.856e-05 deg
M 177.4668497653311 2.5301e-05 deg
tp 2458036.151439122114
(2017-Oct-09.65143912)
0.00013639 TDB
period 1956.227218633252
5.36
6.0702e-06
1.662e-08
d
yr
n .18402770218662 5.7104e-10 deg/d
Q 3.289097535230735 6.8041e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3097  
   data-arc span      43887 days (120.16 yr)  
   first obs. used      1899-12-07  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47649  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:27:33  

Additional Information
 Earth MOID = 1.85372 au 
 Jupiter MOID = 1.97292 au 
 T_jup = 3.176 
[ 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 6.7   n/a MPO492754 IRAS observations used: 17
magnitude slope G 0.19   n/a PDS3 (MPC 17258) Fit
diameter diameter 253.900 km 2.780 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 9.727 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.]
[Michalowski, T.; Kaasalainen, M.; Marciniak, A.; Denchev, P.; et al. (2005) Astron. Astrophys. 443, 329-335.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.085   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.666   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=10; phase (min.=1.70, mean=9.61, max.=18.97) deg.
U-B UB 0.310   0.044 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=9; phase (min.=1.70, mean=9.60, max.=17.68) deg.
Tholen spectral type spec_T CU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

451 Patientia (A899 XA)          Discovered 1899-Dec-04 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A899 XA = A902 MB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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