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249300 Karenmortfield (2008 UY)
Classification: Main-belt Asteroid          SPK-ID: 2249300
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05554442661464223 6.9527e-08  
a 2.557462171095313 3.3077e-08 au
q 2.415409401213186 1.6485e-07 au
i 3.630731283073655 9.0365e-06 deg
node 66.15155815553885 8.6095e-05 deg
peri 121.9010062359551 0.00012496 deg
M 133.3164250928606 8.3694e-05 deg
tp 2458447.285679980732
(2018-Nov-24.78567998)
0.00035209 TDB
period 1493.868104160572
4.09
2.8981e-05
7.935e-08
d
yr
n .2409851304793 4.6752e-09 deg/d
Q 2.699514940977441 3.4914e-08 au
  Orbit Determination Parameters
   # obs. used (total)      180  
   data-arc span      6847 days (18.75 yr)  
   first obs. used      2000-10-29  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5028  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:21:40  

Additional Information
 Earth MOID = 1.41769 au 
 Jupiter MOID = 2.25802 au 
 T_jup = 3.432 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457310.5 (2015-Oct-15.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05419197642946456 6.9667e-08  
q 2.418873605247468 1.6471e-07 au
tp 2456950.686220560374
(2014-Oct-20.18622056)
0.00037544 TDB
node 66.18604420342004 8.5991e-05 deg
peri 121.3866194738848 0.00012657 deg
i 3.633176440574739 9.0407e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      180  
   data-arc span      6847 days (18.75 yr)  
   first obs. used      2000-10-29  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5028  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:21:40  

Additional Information
 Jupiter MOID = 2.25802 au 
 T_jup = 3.432 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.853437835389261E-15 -1.132281198020219E-14 6.781832161826569E-13 2.754728193115038E-14 8.985854060886346E-14 2.595317980769686E-15
q -1.132281198020219E-14 2.712910095682143E-14 -7.572064915627787E-12 -6.363553092610641E-14 -1.66263676282867E-12 -6.347015853709401E-15
tp 6.781832161826569E-13 -7.572064915627787E-12 1.409547024648651E-7 -8.407812103052303E-11 3.487719713897705E-8 2.222160099949673E-11
node 2.754728193115038E-14 -6.363553092610641E-14 -8.407812103052303E-11 7.394496686469262E-9 -7.400253950266619E-9 -2.273682746873698E-11
peri 8.985854060886346E-14 -1.66263676282867E-12 3.487719713897705E-8 -7.400253950266619E-9 1.601872457480864E-8 2.823044048541165E-11
i 2.595317980769686E-15 -6.347015853709401E-15 2.222160099949673E-11 -2.273682746873698E-11 2.823044048541165E-11 8.173503437897438E-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 16.7   n/a MPO476002  
diameter diameter 2.422 km 0.451 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249300 Karenmortfield           Discovered 2008 Oct. 18 at Auberry.
Karen Mortfield (b. 1958) is a Canadian public affairs specialist. As a volunteer, she played a leadership role in the renaissance of the David Dunlap Observatory in Canada, working from 2009-2017 to repurpose the 80-year old Observatory as a space science campus.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2018-10-26Last Updated: 2019-04-09

Alternate Designations
 2008 UY = 2000 UL31 = 2006 CJ45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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