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JPL Small-Body Database Browser
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2203 van Rhijn (1935 SQ1)
Classification: Main-belt Asteroid          SPK-ID: 2002203
[ 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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1880126271386962 3.9382e-08  
a 3.105274221472905 1.448e-08 au
q 2.521443457107715 1.2512e-07 au
i 1.645203233439164 4.1863e-06 deg
node 50.19828289843993 0.00014234 deg
peri 328.6653277986663 0.00014266 deg
M 78.34720958350374 9.6908e-06 deg
tp 2458165.519892408714
(2018-Feb-16.01989241)		 5.29e-05 TDB
period 1998.703458174396
5.47		 1.398e-05
3.828e-08		 d
yr
n .180116764459307 1.2598e-09 deg/d
Q 3.689104985838095 1.7202e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2565  
   data-arc span      30751 days (84.19 yr)  
   first obs. used      1935-09-28  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47627  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:11:44  

Additional Information
 Earth MOID = 1.52309 au 
 Jupiter MOID = 1.76891 au 
 T_jup = 3.193 
[ 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 11.6   n/a MPO337265  
diameter diameter 21.501 km 0.229 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 30.55 h n/a LCDB (Rev. 2019-January); 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]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.096   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

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Alternate Designations
 1935 SQ1 = 1951 PP = 1957 UX = 1974 XQ 
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