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101969 (1999 RJ45)
Classification: Mars-crossing Asteroid          SPK-ID: 2101969
[ 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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4451033560631882 4.2218e-08  
a 2.862855808734289 1.6086e-08 au
q 1.588589080341664 1.1768e-07 au
i 15.07229065050771 5.5503e-06 deg
node 125.1281709610792 1.6878e-05 deg
peri 243.6288832895559 2.0174e-05 deg
M 93.51368975217295 1.8039e-05 deg
tp 2458540.910252927341
(2019-Feb-26.41025293)		 8.5304e-05 TDB
period 1769.284362371263
4.84		 1.4912e-05
4.083e-08		 d
yr
n .2034720973385613 1.7149e-09 deg/d
Q 4.137122537126915 2.3246e-08 au
   Orbit Determination Parameters
   # obs. used (total)      775  
   data-arc span      13021 days (35.65 yr)  
   first obs. used      1984-08-26  
   last obs. used      2020-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53062  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 18:04:13  

Additional Information
 Earth MOID = .649461 au 
 Jupiter MOID = 1.63023 au 
 T_jup = 3.100 
[ 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 14.8   n/a MPO309891  
diameter diameter 5.761 km 1.719 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.064   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

101969 (1999 RJ45)          Discovered 1999-Sep-13 by McNaught, R. H. at Siding Spring
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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