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4600 Meadows (1985 RE4)
Classification: Main-belt Asteroid          SPK-ID: 2004600
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09515571635582315 6.2931e-08  
a 3.01155958919229 2.8861e-08 AU
q 2.724992479134449 1.8735e-07 AU
i 11.21976431582431 6.7535e-06 deg
node 138.4588207235541 2.8753e-05 deg
peri 193.7595476353316 4.1901e-05 deg
M 220.3990431966478 3.3642e-05 deg
tp 2457740.738232771765
(2016-Dec-18.23823277)
0.00018328 JED
period 1908.910725971732
5.23
2.7441e-05
7.513e-08
d
yr
n .1885892279308881 2.711e-09 deg/d
Q 3.298126699250131 3.1607e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1191  
   data-arc span      23148 days (63.38 yr)  
   first obs. used      1951-02-04  
   last obs. used      2014-06-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52305  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:01:36  

Additional Information
 Earth MOID = 1.7159 AU 
 T_jup = 3.213 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.9 mag n/a MPO302091  
rotation period rot_per 11.682 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Folberth, J.; Casimir, S.; Dou, Y.; Evans, D; et al. (2012) Minor Planet Bul. 39, 51-55.]

4600 Meadows           Discovered 1985 Sept. 10 by H. Debehogne at the European Southern Observatory.
Jack Meadows (b. 1934), now retired from the Department of Information and Library Studies at Loughborough University, was responsible for initiating the program for detecting fast-moving objects using the infrared survey satellite IRAS. He also carried out the first ultraviolet survey of minor planets using the IUE satellite.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060613/MPCPages.arcLast Updated: 2008-05-22

Alternate Designations
 1985 RE4 = 1973 FK1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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