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20608 Fredmerlin (1999 RH224)
Classification: Main-belt Asteroid          SPK-ID: 2020608
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 .0746813027382955 5.3458e-08  
a 2.191870233494675 1.6677e-08 AU
q 2.028178509024001 1.1852e-07 AU
i 8.636140695716584 7.1848e-06 deg
node 27.10286218310927 3.7244e-05 deg
peri 243.454713858029 6.531e-05 deg
M 317.2084151770779 5.5494e-05 deg
tp 2457141.388827718734
(2015-Apr-28.88882772)
0.00018275 JED
period 1185.279259663572
3.25
1.3527e-05
3.703e-08
d
yr
n .3037258916537372 3.4663e-09 deg/d
Q 2.355561957965349 1.7922e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      757  
   data-arc span      9451 days (25.88 yr)  
   first obs. used      1989-08-02  
   last obs. used      2015-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55787  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:27:21  

Additional Information
 Earth MOID = 1.03096 AU 
 T_jup = 3.654 
[ 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 15.1 mag n/a MPO272738  

20608 Fredmerlin           Discovered 1999 Sept. 7 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Frédéric Merlin (b. 1981) is a planetary scientist at Paris Observatory. He studies transneptunian objects using spectroscopy and surface compositional modeling.
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
 1999 RH224 = 1998 FY80 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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