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502 Sigune (A903 BM)
Classification: Main-belt Asteroid          SPK-ID: 2000502
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 .1798930091886587 3.9694e-08  
a 2.382181507785681 7.0949e-09 au
q 1.953643707916539 9.5752e-08 au
i 25.0346422894611 4.6854e-06 deg
node 132.9616870702143 9.8346e-06 deg
peri 19.07026420810575 1.6043e-05 deg
M 286.8841806815138 1.5372e-05 deg
tp 2459273.253009110347
(2021-Feb-27.75300911)
5.8041e-05 TDB
period 1342.952649576602
3.68
5.9996e-06
1.643e-08
d
yr
n .2680660409832757 1.1976e-09 deg/d
Q 2.810719307654823 8.3712e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2333  
   data-arc span      43020 days (117.78 yr)  
   first obs. used      1903-01-19  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38357  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:28:54  

Additional Information
 Earth MOID = .975693 au 
 Jupiter MOID = 2.24214 au 
 T_jup = 3.390 
[ 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 10.8   n/a MPO502157 IRAS observations used: 6
diameter diameter 15.805 km 1.158 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 10.922 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Tedesco, E.F. (1979) PhD Dissertation, New. Mex. State Univ. 280pp.]
[Stephens, R.D. (2007) Minor Planet Bull. 34, 102-103.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Buchheim, R.K. (2014) Minor Planet Bull. 41, 241-243.]
[Klinglesmith III, D.A.; Hanowell, J.; Warren, C.A. (2014) Minor Planet Bull. 41, 206-208.]
[Stephens, R.D. (2014) Minor Planet Bull. 41, 171-175.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.178   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.870   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=16.56, mean=17.98, max.=20.44) deg.
U-B UB 0.495   0.034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=16.56, mean=17.98, max.=20.44) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

502 Sigune (A903 BM)          Discovered 1903-Jan-19 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A903 BM = 1925 AD = 1929 EK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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