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103117 (1999 XY181)
Classification: Main-belt Asteroid          SPK-ID: 2103117
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2434847252326888 3.0444e-08  
a 2.750013120143443 1.5761e-08 au
q 2.080426931199027 8.4217e-08 au
i 16.07513091821232 6.0574e-06 deg
node 44.88689662499633 1.4164e-05 deg
peri 58.24481426100202 1.9641e-05 deg
M 203.3439149419879 1.3541e-05 deg
tp 2459925.345327782805
(2022-Dec-11.84532778)		 6.564e-05 TDB
period 1665.714535794625
4.56		 1.432e-05
3.921e-08		 d
yr
n .2161234666948877 1.858e-09 deg/d
Q 3.419599309087858 1.9599e-08 au
   Orbit Determination Parameters
   # obs. used (total)      756  
   data-arc span      7210 days (19.74 yr)  
   first obs. used      1999-10-06  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50199  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:44:57  

Additional Information
 Earth MOID = 1.14247 au 
 Jupiter MOID = 2.0355 au 
 T_jup = 3.247 
[ 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 15.0   n/a MPO296811  
diameter diameter 5.166 km 0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

103117 (1999 XY181)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 XY181 = 2001 HO65 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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