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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04765598329877872 1.7339e-08  
a 2.603535910840802 1.0357e-08 au
q 2.479461846956002 4.6945e-08 au
i 15.91854424763176 3.5753e-07 deg
node 124.5147219460007 1.3168e-06 deg
peri 22.70163204932866 2.1063e-05 deg
M 218.8374832689319 2.2577e-05 deg
tp 2459802.173213614359
(2022-Aug-10.67321361)
9.7529e-05 TDB
period 1534.41835635322
4.20
9.1562e-06
2.507e-08
d
yr
n .2346165884352395 1.4e-09 deg/d
Q 2.727609974725601 1.0851e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2500  
   data-arc span      24562 days (67.25 yr)  
   first obs. used      1953-11-11  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40457  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 17:16:24  

Additional Information
 Earth MOID = 1.49793 au 
 Jupiter MOID = 2.3191 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 12.66   n/a E2021B10  
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. 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:
[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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