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2203 van Rhijn (1935 SQ1)
Classification: Main-belt Asteroid          SPK-ID: 2002203
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1870870639663737 5.4644e-08  
a 3.105245066775505 1.8544e-08 AU
q 2.52429388433641 1.678e-07 AU
i 1.645542945578827 5.4228e-06 deg
node 50.20674093353595 0.0001916 deg
peri 328.9633654284462 0.00019211 deg
M 149.7576968813133 1.252e-05 deg
tp 2456169.063857586825
(2012-Aug-29.56385759)
6.8555e-05 JED
period 1998.675310197639
5.47
1.7903e-05
4.902e-08
d
yr
n .1801193011006882 1.6134e-09 deg/d
Q 3.686196249214601 2.2013e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1490  
   data-arc span      28948 days (79.26 yr)  
   first obs. used      1935-09-28  
   last obs. used      2014-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53719  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-07 23:55:50  

Additional Information
 Earth MOID = 1.52667 AU 
 T_jup = 3.193 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.5 mag n/a PDS3 (MPC 17264)  
rotation period rot_per 30.55 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]

2203 van Rhijn (1935 SQ1)          Discovered 1935-Sep-28 by Van Gent, H. at Johannesburg (LS)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1935 SQ1 = 1951 PP = 1957 UX = 1974 XQ 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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