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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 104 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08999509236894365 8.0509e-09  
a 2.89659291583729 8.9603e-09 au
q 2.635913768821285 1.9967e-08 au
i 11.50651829475531 2.2789e-07 deg
node 159.255789958341 1.6602e-06 deg
peri 226.2249523779681 1.1684e-05 deg
M 247.3299246828288 1.1668e-05 deg
tp 2459564.054221063570
(2021-Dec-15.55422106)
5.8898e-05 TDB
period 1800.651317679254
4.93
8.3552e-06
2.288e-08
d
yr
n .1999276575455937 9.2768e-10 deg/d
Q 3.157272062853294 9.7667e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2924  
   data-arc span      10563 days (28.92 yr)  
   first obs. used      1991-07-16  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .31926  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:08:52  

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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