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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2718715552109853 1.9057e-08  
a 2.762085993490123 9.7608e-09 au
q 2.011153378813483 5.2957e-08 au
i 10.94648057037206 1.0375e-06 deg
node 184.3082624846539 6.8755e-06 deg
peri 176.5893062730174 6.2992e-06 deg
M 175.6390115643838 5.1934e-06 deg
tp 2458382.463458676267
(2018-Sep-20.96345868)
2.2069e-05 TDB
period 1676.69558290922
4.59
8.8878e-06
2.433e-08
d
yr
n .2147080267101122 1.1381e-09 deg/d
Q 3.513018608166761 1.2415e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2930  
   data-arc span      37802 days (103.50 yr)  
   first obs. used      1917-09-23  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43067  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:40:54  

Additional Information
 Earth MOID = 1.00691 au 
 Jupiter MOID = 1.95049 au 
 T_jup = 3.261 
[ show covariance matrix ]

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 11.99   n/a MPCxxxxx  
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. 2020-October); 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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1933-Nov-20 15:20 00:01 Jupiter 1.9579517646344 1.95795143156236 1.95795209770922 2.73046948121191 2.56714836734568 2427397.138854598 1.17237108353425 138.269345803858 7.02823720701663 -85.2855652272265 9719466.4828399 T 37 CATAB v2.0g-lin.ifort 2021-May-03 21:41:44 2021-May-03 21:41
2016-Apr-01 23:06 < 00:01 Jupiter 1.95931364554042 1.95931347191351 1.95931381916733 2.57560446249388 2.40190068321329 2457480.462545839 0.0674351402923612 18.0354917044303 8.82592389124648 -87.4896486239401 10347225.4277291 T 37 CATAB v2.0g-lin.ifort 2021-May-03 21:41:44 2021-May-03 21:41
2076-Mar-26 15:36 < 00:01 Jupiter 1.9522313299102 1.95223114210508 1.95223151771588 2.73365429509902 2.57004235523269 2479389.150004216 0.870115903447836 102.405368028361 6.67509500133286 -87.9196829233894 9652354.86183694 T 37 CATAB v2.0g-lin.ifort 2021-May-03 21:41:44 2021-May-03 21:41
2158-Aug-09 15:05 00:02 Jupiter 1.96097442656349 1.96097386696007 1.96097498617305 2.62090445915551 2.45056340099116 2509474.128264552 2.08178960091279 192.680342235906 8.85611444485597 80.7995460931296 9197839.53329073 T 37 CATAB v2.0g-lin.ifort 2021-May-03 21:41:44 2021-May-03 21:41

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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