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91566 (1999 RQ237)
Classification: Main-belt Asteroid          SPK-ID: 2091566
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1003803464715917 4.0599e-08  
a 3.059697702568188 2.0953e-08 au
q 2.75256418708606 1.3143e-07 au
i 10.96946935437129 5.0751e-06 deg
node 117.3160173370584 2.3213e-05 deg
peri 288.5190713226194 3.5519e-05 deg
M 282.2968500566482 2.7595e-05 deg
tp 2459422.441586384267
(2021-Jul-26.94158638)
0.00015113 TDB
period 1954.862463221574
5.35
2.0081e-05
5.498e-08
d
yr
n .1841561781316969 1.8917e-09 deg/d
Q 3.366831218050316 2.3057e-08 au
  Orbit Determination Parameters
   # obs. used (total)      875  
   data-arc span      7633 days (20.90 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53833  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:17:56  

Additional Information
 Earth MOID = 1.78755 au 
 Jupiter MOID = 1.99616 au 
 T_jup = 3.199 
[ 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 14.2   n/a MPO436412  
diameter diameter 4.581 km 0.629 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.176   0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

91566 (1999 RQ237)          Discovered 1999-Sep-08 by CSS at Catalina
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 RQ237 = 2000 YU49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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