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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2090718065444936 4.4723e-08  
a 2.693299241961726 1.583e-08 au
q 2.130206303879873 1.2615e-07 au
i 12.02929273096224 4.3099e-06 deg
node 277.8065247682356 2.34e-05 deg
peri 113.6191499417567 2.6315e-05 deg
M 323.4188893035476 1.3166e-05 deg
tp 2459364.551319183974
(2021-May-30.05131918)
5.9921e-05 TDB
period 1614.45275394435
4.42
1.4233e-05
3.897e-08
d
yr
n .2229857759048483 1.9659e-09 deg/d
Q 3.256392180043579 1.9139e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1140  
   data-arc span      7761 days (21.25 yr)  
   first obs. used      1999-10-12  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47026  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:53:43  

Additional Information
 Earth MOID = 1.16886 au 
 Jupiter MOID = 2.29105 au 
 T_jup = 3.308 
[ 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 14.27   n/a E2021B10  
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

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