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5575 Ryanpark (1985 RP2)
Classification: Main-belt Asteroid          SPK-ID: 2005575
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1838295744997457 5.2381e-08  
a 3.092162916792065 2.5787e-08 AU
q 2.523731923514287 1.6242e-07 AU
i .5915504509110402 5.977e-06 deg
node 142.6217740997709 0.00050986 deg
peri 231.4878431586095 0.0005102 deg
M 111.7816802853994 1.5877e-05 deg
tp 2456383.819648939795
(2013-Apr-01.31964894)
8.599e-05 JED
period 1986.058232573119
5.44
2.4844e-05
6.802e-08
d
yr
n .1812635672487746 2.2675e-09 deg/d
Q 3.660593910069843 3.0528e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1285  
   data-arc span      23690 days (64.86 yr)  
   first obs. used      1950-04-17  
   last obs. used      2015-02-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49248  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 13:59:33  

Additional Information
 Earth MOID = 1.52454 AU 
 T_jup = 3.198 
[ 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 12.7 mag n/a MPO250262  

5575 Ryanpark           Discovered 1985 Sept. 4 by H. Debehogne at the European Southern Observatory.
Sang H. ("Ryan") Park (b. 1978), a member of the Jet Propulsion Laboratory's Solar System Dynamics Group, has been instrumental in advancing JPL's planetary ephemeris and gravity science efforts. He received a NASA Exceptional Achievement medal for his contribution to the GRAIL mission.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-01-16Last Updated: 2014-01-21

[ show close-approach data ]
Alternate Designations
 1985 RP2 = 1979 MY 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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