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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1827915844515051 1.7275e-08  
a 3.136171424730528 1.2071e-08 au
q 2.562905680892501 5.7166e-08 au
i 1.989101698518914 9.4118e-07 deg
node 140.3891063350652 2.8463e-05 deg
peri 285.4934809505955 2.8688e-05 deg
M 194.990844430293 6.6006e-06 deg
tp 2460130.330222464005
(2023-Jul-04.83022246)
4.0436e-05 TDB
period 2028.607921368543
5.55
1.1712e-05
3.207e-08
d
yr
n .1774615963035066 1.0245e-09 deg/d
Q 3.709437168568555 1.4277e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3029  
   data-arc span      21193 days (58.02 yr)  
   first obs. used      1963-02-23  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45355  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:30:36  

Additional Information
 Earth MOID = 1.57694 au 
 Jupiter MOID = 1.61187 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 11.61   n/a E2021B10  
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. 2020-October); 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.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
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

[ show close-approach data ]
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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