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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 120 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07447464523470684 3.2765e-08  
a 3.061121589485498 6.2509e-09 au
q 2.833145645088264 1.0054e-07 au
i 15.23852203454215 3.5621e-06 deg
node 89.24401375397555 1.3521e-05 deg
peri 336.5831960917784 2.7328e-05 deg
M 177.4668519433015 2.4609e-05 deg
tp 2458036.151427069204
(2017-Oct-09.65142707)
0.00013248 TDB
period 1956.227219075265
5.36
5.992e-06
1.641e-08
d
yr
n .1840277021450386 5.6369e-10 deg/d
Q 3.289097533882733 6.7165e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3371  
   data-arc span      44153 days (120.88 yr)  
   first obs. used      1899-12-07  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46347  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:29:28  

Additional Information
 Earth MOID = 1.85372 au 
 Jupiter MOID = 1.97292 au 
 T_jup = 3.176 
[ hide covariance matrix ]
Orbital Elements at Epoch 2453495.5 (2005-May-05.0) TDB
Reference: JPL 120 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07729062090589896 3.2363e-08  
q 2.823441871358677 9.9567e-08 au
tp 2454147.915751026156
(2007-Feb-16.41575103)
0.00012555 TDB
node 89.40820380406515 1.3555e-05 deg
peri 340.8191180154398 2.6863e-05 deg
i 15.22188970455257 3.5586e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3371  
   data-arc span      44153 days (120.88 yr)  
   first obs. used      1899-12-07  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46347  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:29:28  

Additional Information
 Jupiter MOID = 1.97292 au 
 T_jup = 3.176 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.047354646477518E-15 -3.216756351587893E-15 -8.563616650597415E-14 2.92918320203357E-15 -4.311034849921924E-14 1.615715387862339E-16
q -3.216756351587893E-15 9.913543434179802E-15 3.704732500792688E-13 -9.48255219204792E-15 1.497714592616E-13 1.315663068310752E-16
tp -8.563616650597415E-14 3.704732500792688E-13 1.576224731196514E-8 -8.900340286094662E-12 2.926074176909889E-9 -4.852946266260812E-12
node 2.92918320203357E-15 -9.48255219204792E-15 -8.900340286094662E-12 1.837330124414038E-10 -1.788094381413997E-10 -2.489890522802047E-12
peri -4.311034849921924E-14 1.497714592616E-13 2.926074176909889E-9 -1.788094381413997E-10 7.215958349408335E-10 1.438929252317696E-12
i 1.615715387862339E-16 1.315663068310752E-16 -4.852946266260812E-12 -2.489890522802047E-12 1.438929252317696E-12 1.266331743986919E-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 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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