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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03314035810064137 3.0544e-08  
a 2.832844063008898 8.8521e-09 au
q 2.738962596317507 8.7845e-08 au
i 2.555603477236041 3.6426e-06 deg
node 38.678003558724 7.9484e-05 deg
peri 59.25078405097354 9.858e-05 deg
M 291.8657437151619 5.8125e-05 deg
tp 2459330.106258434627
(2021-Apr-25.60625843)
0.00028129 TDB
period 1741.535895547312
4.77
8.1629e-06
2.235e-08
d
yr
n .2067140854922561 9.6891e-10 deg/d
Q 2.926725529700288 9.1454e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3510  
   data-arc span      36012 days (98.60 yr)  
   first obs. used      1922-03-28  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44051  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:23:47  

Additional Information
 Earth MOID = 1.75691 au 
 Jupiter MOID = 2.11375 au 
 T_jup = 3.310 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456393.5 (2013-Apr-11.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03121993703420053 3.0161e-08  
q 2.745487536815678 8.647e-08 au
tp 2455824.851926321952
(2011-Sep-20.35192632)
0.00030168 TDB
node 38.73603197149502 7.9308e-05 deg
peri 55.15765789892739 0.00010111 deg
i 2.559996813840005 3.6447e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3510  
   data-arc span      36012 days (98.60 yr)  
   first obs. used      1922-03-28  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44051  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:23:47  

Additional Information
 Jupiter MOID = 2.11375 au 
 T_jup = 3.310 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.097093946703126E-16 -2.595112846647547E-15 3.816288122832126E-13 -2.065756137128842E-15 9.023971350686091E-14 -7.205963250927398E-17
q -2.595112846647547E-15 7.477082852529859E-15 -9.953992461297485E-13 5.852727807799934E-15 -2.351987448598337E-13 1.779638537335586E-16
tp 3.816288122832126E-13 -9.953992461297485E-13 9.101269539971996E-8 1.046389139622166E-12 1.893499808039328E-8 2.564206883020445E-13
node -2.065756137128842E-15 5.852727807799934E-15 1.046389139622166E-12 6.289685211334548E-9 -6.282812119025807E-9 -3.924377639161186E-11
peri 9.023971350686091E-14 -2.351987448598337E-13 1.893499808039328E-8 -6.282812119025807E-9 1.022259555795141E-8 3.924873340179128E-11
i -7.205963250927398E-17 1.779638537335586E-16 2.564206883020445E-13 -3.924377639161186E-11 3.924873340179128E-11 1.328348054666223E-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 10.5   n/a MPO502162 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-August); 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

[ show close-approach data ]
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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