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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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .243484724814698 3.0399e-08  
a 2.75001311851486 1.5754e-08 au
q 2.08042693111646 8.4075e-08 au
i 16.07513079769485 6.0574e-06 deg
node 44.88689704358477 1.4135e-05 deg
peri 58.24481391951993 1.9617e-05 deg
M 203.3439151603347 1.354e-05 deg
tp 2459925.345326128628
(2022-Dec-11.84532613)
6.5638e-05 TDB
period 1665.714534314948
4.56
1.4314e-05
3.919e-08
d
yr
n .2161234668868732 1.8572e-09 deg/d
Q 3.419599305913261 1.959e-08 au
  Orbit Determination Parameters
   # obs. used (total)      760  
   data-arc span      7210 days (19.74 yr)  
   first obs. used      1999-10-06  
   last obs. used      2019-07-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50143  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:45:11  

Additional Information
 Earth MOID = 1.14247 au 
 Jupiter MOID = 2.0355 au 
 T_jup = 3.247 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457457.5 (2016-Mar-10.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2460522625930926 3.0663e-08  
q 2.068901261712586 8.5042e-08 au
tp 2458259.249132492057
(2018-May-20.74913249)
5.8098e-05 TDB
node 45.08430617167381 1.4113e-05 deg
peri 57.68513001033723 1.9465e-05 deg
i 16.12175503539034 6.063e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      760  
   data-arc span      7210 days (19.74 yr)  
   first obs. used      1999-10-06  
   last obs. used      2019-07-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50143  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:45:11  

Additional Information
 Jupiter MOID = 2.0355 au 
 T_jup = 3.247 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.402010795865763E-16 -2.582433898006365E-15 -4.236982121443919E-13 5.140114889316507E-16 -1.08535382408935E-13 -9.018847470499824E-16
q -2.582433898006365E-15 7.232214706617298E-15 1.400288284743765E-12 -2.333174877232885E-15 3.359437414050569E-13 3.310430088026651E-15
tp -4.236982121443919E-13 1.400288284743765E-12 3.375393977657252E-9 -5.63932285327383E-12 7.867841183623465E-10 -2.928051196563002E-12
node 5.140114889316507E-16 -2.333174877232885E-15 -5.63932285327383E-12 1.991865746894008E-10 -1.922056075902319E-10 -2.861803372374695E-11
peri -1.08535382408935E-13 3.359437414050569E-13 7.867841183623465E-10 -1.922056075902319E-10 3.789006940046238E-10 2.668713604787705E-11
i -9.018847470499824E-16 3.310430088026651E-15 -2.928051196563002E-12 -2.861803372374695E-11 2.668713604787705E-11 3.67596279217655E-11

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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