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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2512294346907342 1.9581e-08  
a 2.609631096572091 7.4917e-09 au
q 1.954014951428924 5.2674e-08 au
i 11.82936754497099 2.0359e-07 deg
node 299.3228817232237 1.8896e-06 deg
peri 76.77046901587364 3.4575e-06 deg
M 358.375291102305 3.8412e-06 deg
tp 2459207.449285642191
(2020-Dec-23.94928564)
1.6438e-05 TDB
period 1539.80989132143
4.22
6.6307e-06
1.815e-08
d
yr
n .2337950951146677 1.0068e-09 deg/d
Q 3.265247241715259 9.3739e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3218  
   data-arc span      29415 days (80.53 yr)  
   first obs. used      1940-09-06  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37526  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:35:10  

Additional Information
 Earth MOID = .992679 au 
 Jupiter MOID = 2.38615 au 
 T_jup = 3.336 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.20   n/a E2020-QM5  
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. 2020-October); 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.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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

Alternate Designations
 1982 OR = 1940 RD = 1957 SD = 1970 WC1 = 1971 BC4 = 1980 BT2 = 1987 YF = 2019 HN6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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