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115498 (2003 UN26)
Classification: Main-belt Asteroid          SPK-ID: 2115498
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1296143550019533 3.8225e-08  
a 2.38678121047426 1.1097e-08 au
q 2.077420103347858 9.1365e-08 au
i 5.754473227715826 3.7692e-06 deg
node 78.355714836331 4.2011e-05 deg
peri 262.8354825260532 4.4939e-05 deg
M 269.3858197760983 1.8486e-05 deg
tp 2459539.508827734886
(2021-Nov-21.00882773)
7.0284e-05 TDB
period 1346.844143852523
3.69
9.3927e-06
2.572e-08
d
yr
n .2672915063284556 1.8641e-09 deg/d
Q 2.696142317600663 1.2535e-08 au
  Orbit Determination Parameters
   # obs. used (total)      843  
   data-arc span      7617 days (20.85 yr)  
   first obs. used      1999-07-14  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55676  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:43:51  

Additional Information
 Earth MOID = 1.07659 au 
 Jupiter MOID = 2.67294 au 
 T_jup = 3.516 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457203.5 (2015-Jun-30.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1294452591133215 3.8179e-08  
q 2.077968824904094 9.1206e-08 au
tp 2456842.187257755451
(2014-Jul-03.68725776)
6.3146e-05 TDB
node 78.45413796629811 4.2019e-05 deg
peri 262.1027427732631 4.495e-05 deg
i 5.753795654468505 3.7673e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      843  
   data-arc span      7617 days (20.85 yr)  
   first obs. used      1999-07-14  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55676  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:43:51  

Additional Information
 Jupiter MOID = 2.67294 au 
 T_jup = 3.516 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.457665927838666E-15 -3.462371428736417E-15 8.194158072752684E-13 -9.663123123769507E-15 2.039894525313734E-13 6.857697931955845E-16
q -3.462371428736417E-15 8.318443848200287E-15 -1.797978392845905E-12 2.345189375246786E-14 -4.427046708439148E-13 -1.50554233458136E-15
tp 8.194158072752684E-13 -1.797978392845905E-12 3.987409660986177E-9 -7.139641760420896E-13 1.02860884011949E-9 -3.560409439512493E-13
node -9.663123123769507E-15 2.345189375246786E-14 -7.139641760420896E-13 1.765567231049505E-9 -1.756388376836181E-9 -3.691873718414774E-11
peri 2.039894525313734E-13 -4.427046708439148E-13 1.02860884011949E-9 -1.756388376836181E-9 2.020482855290513E-9 3.663723680328086E-11
i 6.857697931955845E-16 -1.50554233458136E-15 -3.560409439512493E-13 -3.691873718414774E-11 3.663723680328086E-11 1.419229674972601E-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 15.79   n/a E2021B55  
diameter diameter 1.939 km 0.453 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.156   0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

115498 (2003 UN26)          Discovered 2003-Oct-25 by Tucker, R. A. at Goodricke-Pigott
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 2003 UN26 = 2002 GE160 = 2002 JM20 = 2003 QL112 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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