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71048 (1999 XA87)
Classification: Main-belt Asteroid          SPK-ID: 2071048
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2088739850950476 4.4195e-08  
a 2.69251007350225 1.5297e-08 au
q 2.130114764541275 1.2431e-07 au
i 12.02907538443681 4.2969e-06 deg
node 277.8015867988506 2.3335e-05 deg
peri 113.6704017938473 2.6223e-05 deg
M 7.095934970304366 1.3182e-05 deg
tp 2459364.691619483466
(2021-May-30.19161948)
5.893e-05 TDB
period 1613.743225364001
4.42
1.3752e-05
3.765e-08
d
yr
n .2230838180087773 1.9011e-09 deg/d
Q 3.254905382463224 1.8492e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1209  
   data-arc span      7967 days (21.81 yr)  
   first obs. used      1999-10-12  
   last obs. used      2021-08-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45731  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:41:36  

Additional Information
 Earth MOID = 1.16916 au 
 Jupiter MOID = 2.29294 au 
 T_jup = 3.309 
[ 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 14.23   n/a MPO637022  
diameter diameter 5.509 km 0.472 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.133   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71048 (1999 XA87)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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