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JPL Small-Body Database Browser
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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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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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04615741314322962 3.363e-08  
a 2.605218083253528 1.1452e-08 au
q 2.484967955856582 8.5929e-08 au
i 15.90369691291636 3.7325e-06 deg
node 124.5453132780684 1.5439e-05 deg
peri 21.97915111572712 5.1161e-05 deg
M 78.97379817185482 4.8466e-05 deg
tp 2458263.565813951917
(2018-May-25.06581395)
0.00020664 TDB
period 1535.905702716199
4.21
1.0127e-05
2.773e-08
d
yr
n .2343893895070197 1.5455e-09 deg/d
Q 2.725468210650474 1.1981e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1987  
   data-arc span      24068 days (65.89 yr)  
   first obs. used      1953-11-11  
   last obs. used      2019-10-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42089  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:43:54  

Additional Information
 Earth MOID = 1.50368 au 
 Jupiter MOID = 2.32326 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-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:
[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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