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181156 (2005 RS31)
Classification: Main-belt Asteroid          SPK-ID: 2181156
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1788259151138991 7.9172e-08  
a 3.021298096014849 4.0485e-08 au
q 2.481011699163113 2.5758e-07 au
i 17.66184306969563 6.4244e-06 deg
node 272.7109976693774 2.2016e-05 deg
peri 40.03902518941511 2.6989e-05 deg
M 4.783474082705315 1.9155e-05 deg
tp 2459175.012354568444
(2020-Nov-21.51235457)
0.0001017 TDB
period 1918.177499598981
5.25
3.8555e-05
1.056e-07
d
yr
n .1876781476559195 3.7723e-09 deg/d
Q 3.561584492866586 4.7725e-08 au
  Orbit Determination Parameters
   # obs. used (total)      349  
   data-arc span      9538 days (26.11 yr)  
   first obs. used      1994-06-04  
   last obs. used      2020-07-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46198  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:26  

Additional Information
 Earth MOID = 1.48908 au 
 Jupiter MOID = 1.74364 au 
 T_jup = 3.151 
[ 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 14.85   n/a E2021B55  
diameter diameter 3.880 km 0.356 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.170   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

181156 (2005 RS31)          Discovered 2005-Sep-13 by LONEOS at Anderson Mesa
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

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