Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
20608 Fredmerlin (1999 RH224)
Classification: Main-belt Asteroid          SPK-ID: 2020608
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0745704821888057 4.8241e-08  
a 2.192343285341482 8.8265e-09 au
q 2.028859189430177 1.0389e-07 au
i 8.63307367003237 4.5408e-06 deg
node 27.08360857870161 3.0397e-05 deg
peri 243.2038784607185 4.1306e-05 deg
M 204.8026204530112 2.9159e-05 deg
tp 2459511.643859736143
(2021-Oct-24.14385974)
9.6616e-05 TDB
period 1185.662992778165
3.25
7.1603e-06
1.96e-08
d
yr
n .3036275924885472 1.8336e-09 deg/d
Q 2.355827381252787 9.4847e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1208  
   data-arc span      11140 days (30.50 yr)  
   first obs. used      1989-08-02  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49674  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:09:54  

Additional Information
 Earth MOID = 1.03007 au 
 Jupiter MOID = 2.69561 au 
 T_jup = 3.653 
[ 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 15.2   n/a MPO439237  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-25 01:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin