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66838 (1999 UF49)
Classification: Main-belt Asteroid          SPK-ID: 2066838
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04742273494514569 3.8532e-08  
a 2.749707668503821 1.7461e-08 au
q 2.619309010563729 1.0908e-07 au
i 5.044267076536556 5.1991e-06 deg
node 348.2211035054682 4.2544e-05 deg
peri 58.47403632456234 6.8951e-05 deg
M 261.0596443224072 5.5643e-05 deg
tp 2459854.219253145447
(2022-Oct-01.71925315)
0.00025885 TDB
period 1665.437020150907
4.56
1.5863e-05
4.343e-08
d
yr
n .2161594798507481 2.0589e-09 deg/d
Q 2.880106326443912 1.8289e-08 au
  Orbit Determination Parameters
   # obs. used (total)      523  
   data-arc span      9917 days (27.15 yr)  
   first obs. used      1994-06-13  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56201  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:34:35  

Additional Information
 Earth MOID = 1.63141 au 
 Jupiter MOID = 2.29617 au 
 T_jup = 3.339 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457800.5 (2017-Feb-16.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04823066317146876 3.7974e-08  
q 2.615026695154335 1.0704e-07 au
tp 2458199.319921321555
(2018-Mar-21.81992132)
0.00025197 TDB
node 348.2628657931509 4.2574e-05 deg
peri 60.44654773896087 6.8663e-05 deg
i 5.043753967973705 5.1981e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      523  
   data-arc span      9917 days (27.15 yr)  
   first obs. used      1994-06-13  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56201  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:34:35  

Additional Information
 Jupiter MOID = 2.29617 au 
 T_jup = 3.339 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.442007372585977E-15 -4.015213838139145E-15 -2.392439037014904E-12 -3.631136135318309E-15 -5.400092495568538E-13 7.393759294881346E-16
q -4.015213838139145E-15 1.145668395860658E-14 7.628651606462049E-12 1.061512487080065E-14 1.69706976768697E-12 -1.966893925176728E-15
tp -2.392439037014904E-12 7.628651606462049E-12 6.348915628405004E-8 -2.496935746489269E-11 1.358381913755211E-8 -8.814026767272965E-12
node -3.631136135318309E-15 1.061512487080065E-14 -2.496935746489269E-11 1.812586645442331E-9 -1.810362325521711E-9 -5.147774703403945E-12
peri -5.400092495568538E-13 1.69706976768697E-12 1.358381913755211E-8 -1.810362325521711E-9 4.714667075031706E-9 3.256603137579843E-12
i 7.393759294881346E-16 -1.966893925176728E-15 -8.814026767272965E-12 -5.147774703403945E-12 3.256603137579843E-12 2.701991278609481E-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 15.66   n/a MPO636973  

66838 (1999 UF49)          Discovered 1999-Oct-31 by CSS at Catalina
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 UF49 = 1994 RX21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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