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JPL Small-Body Database Browser
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4369 Seifert (1982 OR)
Classification: Main-belt Asteroid          SPK-ID: 2004369
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2526860729209242 4.9047e-08  
a 2.609485041694414 9.7032e-09 au
q 1.950104514162759 1.281e-07 au
i 11.821723776324 4.5071e-06 deg
node 299.3640397145754 2.5468e-05 deg
peri 76.80752356926418 2.6697e-05 deg
M 218.1749510259838 8.7904e-06 deg
tp 2459207.070221896405
(2020-Dec-23.57022190)
3.911e-05 TDB
period 1539.680623855894
4.22
8.5878e-06
2.351e-08
d
yr
n .2338147239253003 1.3041e-09 deg/d
Q 3.26886556922607 1.2155e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1598  
   data-arc span      28829 days (78.93 yr)  
   first obs. used      1940-09-06  
   last obs. used      2019-08-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47956  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 00:45:51  

Additional Information
 Earth MOID = .989422 au 
 Jupiter MOID = 2.37876 au 
 T_jup = 3.335 
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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 12.0   n/a MPO384792  
diameter diameter 16.019 km 0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 30.573 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.120   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B Xk   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

4369 Seifert (1982 OR)          Discovered 1982-Jul-30 by Brozek, L. at Klet
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1982 OR = 1940 RD = 1957 SD = 1970 WC1 = 1971 BC4 = 1980 BT2 = 1987 YF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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