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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03314037004033408 3.0922e-08  
a 2.832844064124759 9.2474e-09 au
q 2.7389625635731 8.8468e-08 au
i 2.555603282890592 3.6703e-06 deg
node 38.67802020910807 8.4077e-05 deg
peri 59.25078915754677 0.00010366 deg
M 291.8657219707752 6.0871e-05 deg
tp 2459330.106363820014
(2021-Apr-25.60636382)
0.00029471 TDB
period 1741.535896576302
4.77
8.5274e-06
2.335e-08
d
yr
n .2067140853701188 1.0122e-09 deg/d
Q 2.926725564676417 9.5538e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3280  
   data-arc span      35731 days (97.83 yr)  
   first obs. used      1922-03-28  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45514  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:42:06  

Additional Information
 Earth MOID = 1.75691 au 
 Jupiter MOID = 2.11375 au 
 T_jup = 3.310 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456182.5 (2012-Sep-12.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03122997719125806 3.0416e-08  
q 2.744717116118744 8.6771e-08 au
tp 2455822.622503160129
(2011-Sep-18.12250316)
0.00031507 TDB
node 38.73292209091719 8.3884e-05 deg
peri 54.66431785911831 0.00010634 deg
i 2.560318062230392 3.673e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3280  
   data-arc span      35731 days (97.83 yr)  
   first obs. used      1922-03-28  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45514  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:42:06  

Additional Information
 Jupiter MOID = 2.11375 au 
 T_jup = 3.310 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.251601550947274E-16 -2.624904281691814E-15 7.472552404926503E-13 -5.255472280020924E-16 1.616167342678039E-13 -1.006791703464852E-16
q -2.624904281691814E-15 7.529285505305018E-15 -1.775812136283747E-12 1.459353042682159E-15 -3.856605070782011E-13 2.586764733769199E-16
tp 7.472552404926503E-13 -1.775812136283747E-12 9.927073297562571E-8 -5.526835011393332E-12 2.061356959652839E-8 2.0392746716949E-13
node -5.255472280020924E-16 1.459353042682159E-15 -5.526835011393332E-12 7.03656185998879E-9 -7.030304963205487E-9 -5.142374299377122E-11
peri 1.616167342678039E-13 -3.856605070782011E-13 2.061356959652839E-8 -7.030304963205487E-9 1.130923194513489E-8 5.140669277817168E-11
i -1.006791703464852E-16 2.586764733769199E-16 2.0392746716949E-13 -5.142374299377122E-11 5.140669277817168E-11 1.349095480824074E-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

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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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