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 ]  
74700 (1999 RH145)
Classification: Main-belt Asteroid          SPK-ID: 2074700
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2179697228362708 3.6309e-08  
a 2.315460372482381 6.9305e-09 au
q 1.810760116854028 8.4571e-08 au
i 4.062136513124083 4.2159e-06 deg
node 232.9352147521454 5.6879e-05 deg
peri 93.29535710706827 5.758e-05 deg
M 328.1481035858204 9.4611e-06 deg
tp 2459114.364213298188
(2020-Sep-21.86421330)
3.4011e-05 TDB
period 1286.928610288318
3.52
5.7779e-06
1.582e-08
d
yr
n .2797357966261603 1.2559e-09 deg/d
Q 2.820160628110734 8.4411e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1082  
   data-arc span      15177 days (41.55 yr)  
   first obs. used      1978-11-28  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53527  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:50:24  

Additional Information
 Earth MOID = .804761 au 
 Jupiter MOID = 2.53758 au 
 T_jup = 3.546 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO379110  

74700 (1999 RH145)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RH145 = 1978 WA20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-10 17:11 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin