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7204 Ondrejov (1995 GH)
Classification: Main-belt Asteroid          SPK-ID: 2007204
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1226921919343855 3.4739e-08  
a 2.667927996035871 1.0523e-08 au
q 2.340594062279117 9.399e-08 au
i 4.858324261157102 4.0796e-06 deg
node 172.2705285335653 4.0751e-05 deg
peri 236.3286987080252 4.4206e-05 deg
M 33.79905916888856 1.5303e-05 deg
tp 2458851.061777202169
(2020-Jan-02.56177720)
6.777e-05 TDB
period 1591.694015457659
4.36
9.4171e-06
2.578e-08
d
yr
n .2261741242373707 1.3381e-09 deg/d
Q 2.995261929792624 1.1814e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1861  
   data-arc span      14571 days (39.89 yr)  
   first obs. used      1980-11-29  
   last obs. used      2020-10-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48563  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:29:50  

Additional Information
 Earth MOID = 1.35451 au 
 Jupiter MOID = 2.37485 au 
 T_jup = 3.367 
[ 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 13.8   n/a MPO502221  
diameter diameter 5.685 km 0.163 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.233 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.181   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7204 Ondrejov (1995 GH)          Discovered 1995-Apr-03 by Pravec, P. at Ondrejov
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1995 GH = 1980 WM3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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