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115805 (2003 UG238)
Classification: Main-belt Asteroid          SPK-ID: 2115805
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1353946975508668 2.8861e-08  
a 2.56116119555243 1.3671e-08 au
q 2.214393550101592 7.0596e-08 au
i 5.893991647292166 5.4856e-06 deg
node 174.9097987322804 4.0223e-05 deg
peri 115.4704393930639 4.7506e-05 deg
M 168.648809022711 2.4673e-05 deg
tp 2458499.150366404008
(2019-Jan-15.65036640)
0.00010229 TDB
period 1497.110294212372
4.10
1.1987e-05
3.282e-08
d
yr
n .2404632453545418 1.9253e-09 deg/d
Q 2.907928841003268 1.5521e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1035  
   data-arc span      8745 days (23.94 yr)  
   first obs. used      1997-02-08  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48529  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:45:15  

Additional Information
 Earth MOID = 1.20421 au 
 Jupiter MOID = 2.27593 au 
 T_jup = 3.415 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457269.5 (2015-Sep-04.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1362249834576551 2.8586e-08  
q 2.211785412972981 6.9878e-08 au
tp 2457004.141286015504
(2014-Dec-12.64128602)
0.00010239 TDB
node 174.9555406600797 4.0192e-05 deg
peri 115.7319376333579 4.7452e-05 deg
i 5.896783920842157 5.4896e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1035  
   data-arc span      8745 days (23.94 yr)  
   first obs. used      1997-02-08  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48529  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:45:15  

Additional Information
 Jupiter MOID = 2.27593 au 
 T_jup = 3.415 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.171673644612108E-16 -1.97241931981935E-15 -8.019975380596001E-13 -2.639717047201185E-15 -2.209547112491112E-13 -7.389122714643206E-16
q -1.97241931981935E-15 4.882982369393375E-15 1.930085823009731E-12 5.95200567630756E-15 5.369942316209198E-13 2.057087371257071E-15
tp -8.019975380596001E-13 1.930085823009731E-12 1.048435462473012E-8 6.85296299925379E-11 2.603549382112244E-9 9.990011957641228E-12
node -2.639717047201185E-15 5.95200567630756E-15 6.85296299925379E-11 1.615431589871215E-9 -1.589098172674591E-9 1.352856497666425E-10
peri -2.209547112491112E-13 5.369942316209198E-13 2.603549382112244E-9 -1.589098172674591E-9 2.251695588380718E-9 -1.320263019122544E-10
i -7.389122714643206E-16 2.057087371257071E-15 9.990011957641228E-12 1.352856497666425E-10 -1.320263019122544E-10 3.013570690282483E-11

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 15.33   n/a MPCxxxxx  
diameter diameter 2.527 km 0.700 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.277   0.164 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

115805 (2003 UG238)          Discovered 2003-Oct-23 by NEAT at Haleakala
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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