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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 
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Orbital Elements at Epoch 2456891.5 (2014-Aug-22.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1845403160166152 3.5965e-08  
q 2.556103023817681 1.1284e-07 au
tp 2456076.294834736734
(2012-May-28.79483474)
4.8918e-05 TDB
node 140.4136058579775 0.00012009 deg
peri 285.8294409015947 0.00012041 deg
i 1.988760508160868 3.1477e-06 deg
  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
 Jupiter MOID = 1.61108 au 
 T_jup = 3.185 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.293496920658561E-15 -4.04101765483147E-15 -3.327601493889303E-13 -7.205839681309412E-15 -8.013093854395583E-14 -2.00481897522484E-16
q -4.04101765483147E-15 1.273254616764762E-14 1.127863271734116E-12 2.40040013765644E-14 2.725281857472534E-13 6.601290587228645E-16
tp -3.327601493889303E-13 1.127863271734116E-12 2.39294508392647E-9 1.947784872111162E-12 4.564295813532952E-10 -2.763434727662798E-15
node -7.205839681309412E-15 2.40040013765644E-14 1.947784872111162E-12 1.442198793563058E-8 -1.441233433722179E-8 3.126555351784527E-11
peri -8.013093854395583E-14 2.725281857472534E-13 4.564295813532952E-10 -1.441233433722179E-8 1.449805388667043E-8 -3.124305943960286E-11
i -2.00481897522484E-16 6.601290587228645E-16 -2.763434727662798E-15 3.126555351784527E-11 -3.124305943960286E-11 9.907850779468936E-12

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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