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2228 Soyuz-Apollo (1977 OH)
Classification: Main-belt Asteroid          SPK-ID: 2002228
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .183104892830373 3.5999e-08  
a 3.135364539960732 1.2704e-08 au
q 2.56126395188707 1.1288e-07 au
i 1.98901780179527 3.1477e-06 deg
node 140.397509964745 0.00012003 deg
peri 285.5411110168892 0.00012035 deg
M 159.4106766141134 9.8087e-06 deg
tp 2458102.563977135692
(2017-Dec-15.06397714)
5.2815e-05 TDB
period 2027.825081087016
5.55
1.2324e-05
3.374e-08
d
yr
n .1775301052135236 1.079e-09 deg/d
Q 3.709465128034394 1.503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2992  
   data-arc span      21021 days (57.55 yr)  
   first obs. used      1963-02-23  
   last obs. used      2020-09-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45293  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:11:29  

Additional Information
 Earth MOID = 1.5759 au 
 Jupiter MOID = 1.61108 au 
 T_jup = 3.185 
[ 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 11.5   n/a MPO384769  
diameter diameter 26.080 km 0.295 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.388 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2008) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Stephens, R.D. (2018) Minor Planet Bull. 45, 50-54.]
geometric albedo albedo 0.113   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2228 Soyuz-Apollo           Discovered 1977 July 19 by N. S. Chernykh at the Crimean Astrophysical Observatory.
Named in honor of the joint Soviet-American space flight in 1975.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5850Last Updated: 2006-03-21

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Alternate Designations
 1977 OH = 1933 SK1 = 1952 DT1 = 1963 DD = 1973 YN3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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