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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1870870657546874 5.4295e-08  
a 3.105245070347356 1.8171e-08 AU
q 2.524293881686861 1.6696e-07 AU
i 1.645543323467719 5.3483e-06 deg
node 50.20676367698782 0.00018753 deg
peri 328.9633380877178 0.00018799 deg
M 149.7576995327117 1.215e-05 deg
tp 2456169.063841432035
(2012-Aug-29.56384143)
6.6084e-05 JED
period 1998.675313646145
5.47
1.7544e-05
4.803e-08
d
yr
n .1801193007899112 1.581e-09 deg/d
Q 3.686196259007851 2.1571e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1556  
   data-arc span      29038 days (79.50 yr)  
   first obs. used      1935-09-28  
   last obs. used      2015-03-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53143  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:08:56  

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 LCDB (Rev. 2015-May); 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:
[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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