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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1886067613335027 1.5536e-08  
a 3.103302324574431 1.3285e-08 au
q 2.517998523697717 5.336e-08 au
i 1.645439108981142 2.8417e-07 deg
node 50.17940204182915 4.0481e-06 deg
peri 328.5650792109782 6.1754e-06 deg
M 186.5790723244691 7.4928e-06 deg
tp 2460162.408054407830
(2023-Aug-05.90805441)		 4.5609e-05 TDB
period 1996.799949281315
5.47		 1.2822e-05
3.51e-08		 d
yr
n .1802884661177854 1.1577e-09 deg/d
Q 3.688606125451145 1.579e-08 au
   Orbit Determination Parameters
   # obs. used (total)      3118  
   data-arc span      31215 days (85.46 yr)  
   first obs. used      1935-09-28  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44588  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:28:36  

Additional Information
 Earth MOID = 1.51903 au 
 Jupiter MOID = 1.77369 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 11.70   n/a E2021B10  
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. 2020-October); 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.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
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

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