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451 Patientia (1899 EY)
Classification: Main-belt Asteroid          SPK-ID: 2000451
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 98 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07565690384073627 2.7083e-08  
a 3.06122814682027 7.2484e-09 au
q 2.829625103281734 8.2517e-08 au
i 15.23772383101219 3.2342e-06 deg
node 89.25781347959767 1.2021e-05 deg
peri 337.1415328271798 2.2083e-05 deg
M 242.4168836957901 1.888e-05 deg
tp 2458039.475842069954
(2017-Oct-12.97584207)
0.00010316 JED
period 1956.329364073399
5.36
6.9483e-06
1.902e-08
d
yr
n .1840180935844161 6.5358e-10 deg/d
Q 3.292831190358807 7.7968e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2244  
   data-arc span      42284 days (115.77 yr)  
   first obs. used      1899-12-07  
   last obs. used      2015-09-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53259  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 13:04:41  

Additional Information
 Earth MOID = 1.84928 au 
 Jupiter MOID = 1.97583 au 
 T_jup = 3.176 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 6.65 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
magnitude slope G 0.19   n/a PDS3 (MPC 17258) Fit
diameter diameter 224.96 km 4.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
rotation period rot_per 9.727 h n/a LCDB (Rev. 2015-December); 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]
geometric albedo albedo 0.0764   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
B-V BV .666 mag .010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=10; phase (min.=1.70, mean=9.61, max.=18.97) deg.
U-B UB .310 mag .044 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #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 (1899 EY)          Discovered 1899-Dec-04 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1899 EY = A902 MB 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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