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249572 (1994 RR18)
Classification: Main-belt Asteroid          SPK-ID: 2249572
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2214314866700105 4.8454e-08  
a 3.013026621725456 4.7362e-08 au
q 2.345847657500469 1.5504e-07 au
i 15.18669744065888 1.0889e-05 deg
node 339.2682954970156 2.2713e-05 deg
peri 302.2383934437109 3.8329e-05 deg
M 7.168263913313171 2.9233e-05 deg
tp 2458962.462289757762
(2020-Apr-22.96228976)
0.00015476 TDB
period 1910.305738293664
5.23
4.5043e-05
1.233e-07
d
yr
n .1884515095063063 4.4434e-09 deg/d
Q 3.680205585950442 5.785e-08 au
  Orbit Determination Parameters
   # obs. used (total)      282  
   data-arc span      9060 days (24.80 yr)  
   first obs. used      1994-08-12  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .561  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:18:51  

Additional Information
 Earth MOID = 1.36944 au 
 Jupiter MOID = 1.77999 au 
 T_jup = 3.159 
[ 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 15.3   n/a MPO437159  
diameter diameter 5.441 km 0.249 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249572 (1994 RR18)          Discovered 1994-Sep-03 by Elst, E. W. at La Silla
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

[ show close-approach data ]
Alternate Designations
 1994 RR18 = 2008 BO51 = 2010 MC105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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