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4509 Gorbatskij (A917 SG)
Classification: Main-belt Asteroid          SPK-ID: 2004509
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2716536776022322 4.0261e-08  
a 2.762516099663013 1.0523e-08 au
q 2.012068441754181 1.0963e-07 au
i 10.94449760306068 4.3276e-06 deg
node 184.3121715674837 1.7848e-05 deg
peri 176.5860298838659 1.8749e-05 deg
M 132.7121340724906 6.3142e-06 deg
tp 2458382.250483243386
(2018-Sep-20.75048324)
2.8797e-05 TDB
period 1677.087235375238
4.59
9.5828e-06
2.624e-08
d
yr
n .2146578856522346 1.2265e-09 deg/d
Q 3.512963757571845 1.3382e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2690  
   data-arc span      37519 days (102.72 yr)  
   first obs. used      1917-09-23  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43866  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:10:01  

Additional Information
 Earth MOID = 1.00943 au 
 Jupiter MOID = 1.94955 au 
 T_jup = 3.261 
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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 11.9   n/a MPO259370  
diameter diameter 11.562 km 0.197 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.006 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.159   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4509 Gorbatskij           Discovered 1917 Sept. 23 by S. Beljavskij at Simeis.
Vitaly Gerasimovich Gorbatskij (b. 1920), professor at St. Petersburg University, is well known for his works in the field of cosmic gas dynamics. He put forward the mechanism of disk accretion, interpreted the emission spectra of variable stars and proposed an explanation for "hot spots" in systems of binary stars.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

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Alternate Designations
 A917 SG = 1949 QZ1 = 1949 SX = 1972 TW4 = 1986 VG6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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