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483 Seppina (A902 EJ)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000483
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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05119724050357302 3.7285e-08  
a 3.423820135436134 1.5696e-08 au
q 3.248529992521235 1.2852e-07 au
i 18.75277333799801 4.2964e-06 deg
node 173.9311583341565 1.2577e-05 deg
peri 162.12153397411 4.3287e-05 deg
M 65.67002771806821 4.0838e-05 deg
tp 2458578.386212035436
(2019-Apr-04.88621204)
0.00026282 TDB
period 2314.0079111834
6.34
1.5912e-05
4.356e-08
d
yr
n .1555742304337643 1.0698e-09 deg/d
Q 3.599110278351033 1.6499e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3083  
   data-arc span      43339 days (118.66 yr)  
   first obs. used      1902-03-05  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42225  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:29:06  

Additional Information
 Earth MOID = 2.24491 au 
 Jupiter MOID = 1.69599 au 
 T_jup = 3.054 
[ show covariance matrix ]

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 8.3   n/a MPO502157 IRAS observations used: 29
diameter diameter 66.858 km 0.900 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12.727 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Zappala, V.; Di Martino, M.; Cellino, A.; Farinella, P.; et al. (1989) Icarus 82, 354-368.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2005) 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]
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.184   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.863   0.014 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.24, mean=5.90, max.=8.56) deg.
U-B UB 0.410   0.026 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.24, mean=5.90, max.=8.56) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

483 Seppina (A902 EJ)          Discovered 1902-Mar-04 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A902 EJ = 1942 OE = 1955 QJ = A896 GA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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