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JPL Small-Body Database Browser
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975 Perseverantia (A922 FE)
Classification: Main-belt Asteroid          SPK-ID: 2000975
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03282119147139203 3.1148e-08  
a 2.833158397285244 9.4739e-09 au
q 2.740170763059163 8.8904e-08 au
i 2.555638533892809 3.6973e-06 deg
node 38.68301422215997 8.446e-05 deg
peri 59.29402645781846 0.00010446 deg
M 209.104728927891 6.1604e-05 deg
tp 2459330.592420020909
(2021-Apr-26.09242002)
0.00029851 TDB
period 1741.825766573733
4.77
8.7369e-06
2.392e-08
d
yr
n .2066796845634795 1.0367e-09 deg/d
Q 2.926146031511325 9.7849e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3161  
   data-arc span      35647 days (97.60 yr)  
   first obs. used      1922-03-28  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46104  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:59:46  

Additional Information
 Earth MOID = 1.75821 au 
 Jupiter MOID = 2.1151 au 
 T_jup = 3.310 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456106.5 (2012-Jun-28.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03120330124987188 3.0686e-08  
q 2.744565421191791 8.7397e-08 au
tp 2455821.975184156719
(2011-Sep-17.47518416)
0.0003161 TDB
node 38.73148490680717 8.4276e-05 deg
peri 54.52334048610864 0.0001068 deg
i 2.560360421455756 3.7e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3161  
   data-arc span      35647 days (97.60 yr)  
   first obs. used      1922-03-28  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46104  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:59:46  

Additional Information
 Jupiter MOID = 2.1151 au 
 T_jup = 3.310 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.416026380905946E-16 -2.667218766764544E-15 6.558806215062767E-13 -4.788591135842197E-16 1.414145017508361E-13 -1.005293827846299E-16
q -2.667218766764544E-15 7.638204599290222E-15 -1.537979504545716E-12 1.281629352794111E-15 -3.330585247062603E-13 2.580817549165261E-16
tp 6.558806215062767E-13 -1.537979504545716E-12 9.992033876152511E-8 -3.963190960550604E-12 2.075539965987218E-8 2.96074282340757E-13
node -4.788591135842197E-16 1.281629352794111E-15 -3.963190960550604E-12 7.102414257856845E-9 -7.095770109542841E-9 -4.789692949899804E-11
peri 1.414145017508361E-13 -3.330585247062603E-13 2.075539965987218E-8 -7.095770109542841E-9 1.140593358531273E-8 4.790266287039377E-11
i -1.005293827846299E-16 2.580817549165261E-16 2.96074282340757E-13 -4.789692949899804E-11 4.790266287039377E-11 1.368974400907228E-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 10.41   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
diameter diameter 22.169 km 0.237 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.267 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Slivan, S.M.; Binzel, R.P.; Boroumand, S.C.; Pan M.W.; et al. (2008) Icarus 195, 226-276.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.246   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.845   0.007 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.01, mean=6.91, max.=7.80) deg.
U-B UB 0.425   0.049 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.01, mean=6.91, max.=7.80) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

975 Perseverantia (A922 FE)          Discovered 1922-Mar-27 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A922 FE = 1950 CK = A912 CB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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