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70986 (1999 XR28)
Classification: Main-belt Asteroid          SPK-ID: 2070986
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05408118572784292 3.9331e-08  
a 2.660632273313497 1.3177e-08 au
q 2.516742125186937 1.0342e-07 au
i 4.49701720311112 4.2209e-06 deg
node 102.8537785863491 6.1894e-05 deg
peri 16.63889826557674 7.9161e-05 deg
M 209.2111064547881 4.9723e-05 deg
tp 2459664.460988270155
(2022-Mar-25.96098827)
0.00022059 TDB
period 1585.16950524335
4.34
1.1776e-05
3.224e-08
d
yr
n .2271050501597519 1.6871e-09 deg/d
Q 2.804522421440057 1.389e-08 au
  Orbit Determination Parameters
   # obs. used (total)      806  
   data-arc span      10384 days (28.43 yr)  
   first obs. used      1992-02-24  
   last obs. used      2020-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56111  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 06:30:56  

Additional Information
 Earth MOID = 1.53322 au 
 Jupiter MOID = 2.23033 au 
 T_jup = 3.379 
[ 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 15.1   n/a MPO257323  
diameter diameter 2.810 km 0.798 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.186   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70986 (1999 XR28)          Discovered 1999-Dec-06 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XR28 = 2000 AZ246 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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