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JPL Small-Body Database Browser
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103116 (1999 XD181)
Classification: Main-belt Asteroid          SPK-ID: 2103116
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2227859943085414 5.5168e-08  
a 2.584812315261257 1.7382e-08 au
q 2.008952333504815 1.4665e-07 au
i 13.59185601995124 5.8289e-06 deg
node 31.51837079331817 2.1985e-05 deg
peri 298.0501097711795 2.4273e-05 deg
M 310.0717839273807 1.3108e-05 deg
tp 2458811.016187607018
(2019-Nov-23.51618761)
5.6576e-05 TDB
period 1517.895761152335
4.16
1.5311e-05
4.192e-08
d
yr
n .2371704363458398 2.3923e-09 deg/d
Q 3.160672297017699 2.1254e-08 au
  Orbit Determination Parameters
   # obs. used (total)      809  
   data-arc span      7146 days (19.56 yr)  
   first obs. used      1999-10-12  
   last obs. used      2019-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56018  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:37:48  

Additional Information
 Earth MOID = 1.03894 au 
 Jupiter MOID = 2.35996 au 
 T_jup = 3.349 
[ 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 14.9   n/a MPO449622  
diameter diameter 3.953 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.163   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

103116 (1999 XD181)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 XD181 = 2002 GS21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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