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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 115 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08848255994546887 7.8508e-09  
a 2.896673279184155 9.2413e-09 au
q 2.640368212116305 1.9202e-08 au
i 11.52277630326029 2.308e-07 deg
node 159.1862233782248 1.6905e-06 deg
peri 225.9530439231158 1.1774e-05 deg
M 326.6641500472037 1.1797e-05 deg
tp 2459563.246500614907
(2021-Dec-14.74650062)
5.9191e-05 TDB
period 1800.726254358818
4.93
8.6173e-06
2.359e-08
d
yr
n .1999193376164689 9.5671e-10 deg/d
Q 3.152978346252004 1.0059e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3213  
   data-arc span      10981 days (30.06 yr)  
   first obs. used      1991-07-16  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .30249  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:19:31  

Additional Information
 Earth MOID = 1.65501 au 
 Jupiter MOID = 2.2841 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 9.01   n/a E2021B10 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. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2009) Minor Planet Bull. 36, 172-176.]
[Pilcher, F. (2013) Minor Planet Bull. 40, 85-87.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
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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