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1004 Belopolskya (1923 OS)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001004
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08726104816723966 4.3437e-08  
a 3.400209057265746 2.2622e-08 AU
q 3.103503250940995 1.4462e-07 AU
i 2.978689127601051 4.9128e-06 deg
node 153.5439755293356 8.4293e-05 deg
peri 215.6049500696625 8.8116e-05 deg
M 196.4098087872038 2.6736e-05 deg
tp 2458041.166599425900
(2017-Oct-14.66659943)
0.00017396 JED
period 2290.112707955679
6.27
2.2855e-05
6.257e-08
d
yr
n .1571975033147439 1.5688e-09 deg/d
Q 3.696914863590496 2.4596e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1748  
   data-arc span      33420 days (91.50 yr)  
   first obs. used      1923-09-13  
   last obs. used      2015-03-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53233  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:03:05  

Additional Information
 Earth MOID = 2.10324 AU 
 T_jup = 3.139 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.99 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
diameter diameter 71.60 km 2.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
rotation period rot_per 9.44 h n/a LCDB (Rev. 2015-May); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.0348   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
B-V BV .720 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=6.45 deg.
U-B UB .120 mag .045 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=6.45 deg.
Tholen spectral type spec_T PC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

1004 Belopolskya (1923 OS)          Discovered 1923-Sep-05 by Belyavskij, S. at Simeis
Independent discovery Sept. 13 by K. Reinmuth, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1923 OS = 1936 WB = 1937 YB = 1938 AA = 1963 DC = 1974 WK = 2004 SU12 = A917 TA 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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