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249607 (1999 RB144)
Classification: Main-belt Asteroid          SPK-ID: 2249607
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2402563976267594 6.5859e-08  
a 3.106613725029367 3.4416e-08 au
q 2.360229902635964 2.1522e-07 au
i 5.43112809955453 6.3632e-06 deg
node 209.6561337019061 6.589e-05 deg
peri 160.6298153969405 6.7663e-05 deg
M 274.7943168737517 2.037e-05 deg
tp 2459473.864160885535
(2021-Sep-16.36416089)
0.00011994 TDB
period 1999.996850753445
5.48
3.3235e-05
9.099e-08
d
yr
n .1800002834326362 2.9912e-09 deg/d
Q 3.85299754742277 4.2685e-08 au
  Orbit Determination Parameters
   # obs. used (total)      229  
   data-arc span      7154 days (19.59 yr)  
   first obs. used      1999-09-07  
   last obs. used      2019-04-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55478  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:25:35  

Additional Information
 Earth MOID = 1.36103 au 
 Jupiter MOID = 1.62755 au 
 T_jup = 3.168 
[ 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 16.1   n/a MPO437159  
diameter diameter 2.301 km 0.269 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.111   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249607 (1999 RB144)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

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