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5208 Royer (1989 CH1)
Classification: Main-belt Asteroid          SPK-ID: 2005208
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04716334206132081 3.369e-08  
a 2.604759357426433 1.1681e-08 au
q 2.481910200864704 8.6217e-08 au
i 15.91746215581806 3.7345e-06 deg
node 124.5124919732814 1.5407e-05 deg
peri 22.63630428290304 5.0021e-05 deg
M 171.9904654088971 4.7301e-05 deg
tp 2458266.912862182547
(2018-May-28.41286218)
0.00020148 TDB
period 1535.500058020201
4.20
1.0329e-05
2.828e-08
d
yr
n .2344513099297218 1.5771e-09 deg/d
Q 2.727608513988162 1.2232e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1991  
   data-arc span      24274 days (66.46 yr)  
   first obs. used      1953-11-11  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42131  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:18:06  

Additional Information
 Earth MOID = 1.50044 au 
 Jupiter MOID = 2.31974 au 
 T_jup = 3.357 
[ 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 12.6   n/a MPO344342  
diameter diameter 8.081 km 0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.866 h n/a LCDB (Rev. 2019-August); 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:
[Alvarez-Candal, A.; Duffard, R.; Angeli, C.A.; Lazzaro, D.; Fernandez, S. (2004) Icarus 172, 388-401.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.270   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

5208 Royer (1989 CH1)          Discovered 1989-Feb-06 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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