Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1870870617264365 5.4051e-08  
a 3.105245067754068 1.7855e-08 AU
q 2.52429389208745 1.6644e-07 AU
i 1.645543362982627 5.3075e-06 deg
node 50.20676769310352 0.00018199 deg
peri 328.9633377623209 0.00018238 deg
M 149.7576973253587 1.1822e-05 deg
tp 2456169.063854728522
(2012-Aug-29.56385473)
6.3879e-05 JED
period 1998.67531114241
5.47
1.7238e-05
4.72e-08
d
yr
n .1801193010155461 1.5535e-09 deg/d
Q 3.686196243420686 2.1195e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1638  
   data-arc span      29089 days (79.64 yr)  
   first obs. used      1935-09-28  
   last obs. used      2015-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53042  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 15:38:18  

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 11.6 mag n/a MPO337265  
rotation period rot_per 30.55 h n/a LCDB (Rev. 2015-July); 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Aug-31 02:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin