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19085 (1978 UR4)
Classification: Main-belt Asteroid          SPK-ID: 2019085
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1946119720203147 2.7847e-08  
a 2.360160063841135 7.6313e-09 au
q 1.90084465953342 6.6285e-08 au
i 2.459113131276348 3.3072e-06 deg
node 311.7641085391222 9.82e-05 deg
peri 135.9511320775961 9.8859e-05 deg
M 178.5746213627714 1.2072e-05 deg
tp 2458543.556756818196
(2019-Mar-01.05675682)
4.3095e-05 TDB
period 1324.37389893721
3.63
6.4233e-06
1.759e-08
d
yr
n .2718265591679923 1.3184e-09 deg/d
Q 2.819475468148851 9.1164e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1082  
   data-arc span      15215 days (41.66 yr)  
   first obs. used      1978-10-27  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54287  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:45:20  

Additional Information
 Earth MOID = .917869 au 
 Jupiter MOID = 2.39063 au 
 T_jup = 3.525 
[ show covariance matrix ]

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 15.61   n/a E2021B10  

19085 (1978 UR4)          Discovered 1978-Oct-27 by Olmstead, C. M. at Palomar
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1978 UR4 = 1982 YM = 1994 CE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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