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102987 (1999 XM87)
Classification: Main-belt Asteroid          SPK-ID: 2102987
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1387475147052606 3.3922e-08  
a 2.223545407395666 9.4262e-09 au
q 1.915034008285221 7.3365e-08 au
i 6.267315617608689 4.1925e-06 deg
node 92.79086452547963 4.4191e-05 deg
peri 335.3365188720125 4.8352e-05 deg
M 75.82800496072896 1.9174e-05 deg
tp 2458745.409338539705
(2019-Sep-18.90933854)
6.4324e-05 TDB
period 1211.064937990468
3.32
7.7011e-06
2.108e-08
d
yr
n .2972590393025097 1.8902e-09 deg/d
Q 2.532056806506111 1.0734e-08 au
  Orbit Determination Parameters
   # obs. used (total)      515  
   data-arc span      10543 days (28.87 yr)  
   first obs. used      1991-06-08  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55479  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 18:13:00  

Additional Information
 Earth MOID = .931366 au 
 Jupiter MOID = 2.72798 au 
 T_jup = 3.627 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.70   n/a E2021B55  
diameter diameter 1.400 km 0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.157   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102987 (1999 XM87)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 XM87 = 2002 TS84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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