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22864 (1999 RO161)
Classification: Main-belt Asteroid          SPK-ID: 2022864
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1785785963842848 1.5128e-08  
a 3.116504711248655 1.4894e-08 au
q 2.55996367428886 4.9858e-08 au
i 1.859458235781293 5.6591e-07 deg
node 134.4488846231463 3.3553e-05 deg
peri 183.0453708778687 3.4571e-05 deg
M 324.4545990748917 6.7869e-06 deg
tp 2459398.917980396149
(2021-Jul-03.41798040)
3.8338e-05 TDB
period 2009.555978651438
5.50
1.4405e-05
3.944e-08
d
yr
n .179144051633529 1.2842e-09 deg/d
Q 3.67304574820845 1.7553e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2047  
   data-arc span      15703 days (42.99 yr)  
   first obs. used      1977-09-08  
   last obs. used      2020-09-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51716  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:13:57  

Additional Information
 Earth MOID = 1.54465 au 
 Jupiter MOID = 1.63452 au 
 T_jup = 3.192 
[ 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 13.05   n/a E2021B10  
diameter diameter 14.171 km 0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22864 (1999 RO161)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RO161 = 1977 RC2 = 1977 RC3 = 1998 KM20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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