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71157 (1999 XD194)
Classification: Main-belt Asteroid          SPK-ID: 2071157
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09374376229922585 4.0718e-08  
a 3.015520216323789 2.3544e-08 au
q 2.732834005956222 1.2971e-07 au
i 11.20122102876121 4.9213e-06 deg
node 52.48999767552674 2.4669e-05 deg
peri 11.90528362880599 3.8544e-05 deg
M 346.5841802562796 2.9041e-05 deg
tp 2459071.778164419276
(2020-Aug-10.27816442)
0.00015446 TDB
period 1912.677695520651
5.24
2.24e-05
6.133e-08
d
yr
n .1882178062948573 2.2043e-09 deg/d
Q 3.298206426691356 2.5751e-08 au
  Orbit Determination Parameters
   # obs. used (total)      966  
   data-arc span      10667 days (29.20 yr)  
   first obs. used      1991-05-18  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56093  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 06:32:18  

Additional Information
 Earth MOID = 1.74679 au 
 Jupiter MOID = 2.04897 au 
 T_jup = 3.212 
[ 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 14.2   n/a MPO319897  
diameter diameter 5.498 km 0.317 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.064   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71157 (1999 XD194)          Discovered 1999-Dec-12 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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