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191 Kolga (A878 SB)
Classification: Main-belt Asteroid          SPK-ID: 2000191
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 105 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08999509234548202 8.0299e-09  
a 2.896592915814469 8.912e-09 au
q 2.635913768868477 1.9949e-08 au
i 11.506518297 2.2767e-07 deg
node 159.2557899746134 1.6594e-06 deg
peri 226.2249522974306 1.1683e-05 deg
M 247.329924749274 1.1667e-05 deg
tp 2459564.054220724564
(2021-Dec-15.55422072)
5.8889e-05 TDB
period 1800.651317657974
4.93
8.3102e-06
2.275e-08
d
yr
n .1999276575479564 9.2268e-10 deg/d
Q 3.157272062760461 9.7141e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3053  
   data-arc span      10613 days (29.06 yr)  
   first obs. used      1991-07-16  
   last obs. used      2020-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .31512  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:11:34  

Additional Information
 Earth MOID = 1.65163 au 
 Jupiter MOID = 2.28747 au 
 T_jup = 3.253 
[ 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 9.0   n/a MPO473763 IRAS observations used: 6
diameter diameter 94.536 km 0.433 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 17.604 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2009) Minor Planet Bull. 36, 172-176.]
[Pilcher, F. (2013) Minor Planet Bull. 40, 85-87.]
geometric albedo albedo 0.046   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.675   0.036 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=9.77 deg.
U-B UB 0.258   0.051 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=9.77 deg.
Tholen spectral type spec_T XC:   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
SMASSII spectral type spec_B Cb   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)

191 Kolga (A878 SB)          Discovered 1878-Sep-30 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A878 SB = 1949 YP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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