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20361 Romanishin (1998 JD3)
Classification: Main-belt Asteroid          SPK-ID: 2020361
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1575243436757823 6.4803e-08  
a 2.649740323335406 2.6934e-08 AU
q 2.232341717990741 1.699e-07 AU
i 14.31349296211931 8.0891e-06 deg
node 73.79511925195133 2.5368e-05 deg
peri 211.5832701245865 3.4911e-05 deg
M 263.9185653795861 2.5286e-05 deg
tp 2457420.975191804206
(2016-Feb-02.47519180)
0.0001127 JED
period 1575.445554570781
4.31
2.4021e-05
6.577e-08
d
yr
n .2285067858775225 3.4841e-09 deg/d
Q 3.067138928680071 3.1177e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      595  
   data-arc span      6600 days (18.07 yr)  
   first obs. used      1996-01-12  
   last obs. used      2014-02-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56367  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 22:41:25  

Additional Information
 Earth MOID = 1.22939 AU 
 T_jup = 3.329 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a MPO284311  

20361 Romanishin           Discovered 1998 May 1 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
William Romanishin (b. 1952) is a professor of astronomy at the University of Oklahoma. An expert in imaging faint objects using CCD cameras, Romanishin has recently concentrated on observing Kuiper Belt Objects. With Stephen Tegler, he discovered the bimodal nature of centaur colors.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080718/MPCPages.arcLast Updated: 2008-07-18

[ show close-approach data ]
Alternate Designations
 1998 JD3 = 1999 TK254 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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