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249962 (2001 UM54)
Classification: Main-belt Asteroid          SPK-ID: 2249962
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08819680459897375 4.7386e-08  
a 2.765856475067887 2.1728e-08 au
q 2.521916771987518 1.3243e-07 au
i 10.50019408460464 7.2954e-06 deg
node 301.5917056979021 2.7734e-05 deg
peri 81.32587777338318 5.0569e-05 deg
M 21.27714401950222 4.1177e-05 deg
tp 2458901.198977724756
(2020-Feb-21.69897772)
0.00019201 TDB
period 1680.130001767224
4.60
1.9798e-05
5.42e-08
d
yr
n .2142691337106881 2.5249e-09 deg/d
Q 3.009796178148256 2.3645e-08 au
  Orbit Determination Parameters
   # obs. used (total)      241  
   data-arc span      6694 days (18.33 yr)  
   first obs. used      2001-09-26  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52271  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:28:28  

Additional Information
 Earth MOID = 1.55039 au 
 Jupiter MOID = 2.40272 au 
 T_jup = 3.309 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456983.5 (2014-Nov-22.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08940665737458475 4.8296e-08  
q 2.519087249639703 1.3534e-07 au
tp 2457212.826209332063
(2015-Jul-09.32620933)
0.00018507 TDB
node 301.8113172898894 2.774e-05 deg
peri 79.5425212983772 4.9671e-05 deg
i 10.4961247102691 7.2975e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      241  
   data-arc span      6694 days (18.33 yr)  
   first obs. used      2001-09-26  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52271  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:28:28  

Additional Information
 Jupiter MOID = 2.40272 au 
 T_jup = 3.309 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.332458787106715E-15 -6.465345223433834E-15 -3.085642036633232E-12 -9.371383586009784E-15 -6.577109366818678E-13 -6.372849023613144E-15
q -6.465345223433834E-15 1.831804548831099E-14 8.80358530915244E-12 2.69074474121125E-14 1.858918476300705E-12 1.951366474254329E-14
tp -3.085642036633232E-12 8.80358530915244E-12 3.425105529186878E-8 3.382097102322943E-11 7.644725612897771E-9 8.54717104780029E-12
node -9.371383586009784E-15 2.69074474121125E-14 3.382097102322943E-11 7.695059603852782E-10 -7.486291577860108E-10 5.46463120009078E-11
peri -6.577109366818678E-13 1.858918476300705E-12 7.644725612897771E-9 -7.486291577860108E-10 2.467249311090834E-9 -5.198842808552362E-11
i -6.372849023613144E-15 1.951366474254329E-14 8.54717104780029E-12 5.46463120009078E-11 -5.198842808552362E-11 5.325374237127859E-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 16.0   n/a MPO494363  

249962 (2001 UM54)          Discovered 2001-Oct-18 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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