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 ]  
120447 (1981 EP32)
Classification: Main-belt Asteroid          SPK-ID: 2120447
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2363258388675511 5.0097e-08  
a 2.360245524109635 1.3229e-08 au
q 1.802458520691042 1.1658e-07 au
i 9.816423256578894 7.6219e-06 deg
node 344.4823403384945 2.4321e-05 deg
peri 291.0339695196127 3.1149e-05 deg
M 221.8507007397297 2.2242e-05 deg
tp 2459508.753510000152
(2021-Oct-21.25351000)
8.3631e-05 TDB
period 1324.445832007736
3.63
1.1135e-05
3.049e-08
d
yr
n .2718117957714235 2.2853e-09 deg/d
Q 2.918032527528227 1.6356e-08 au
  Orbit Determination Parameters
   # obs. used (total)      588  
   data-arc span      13862 days (37.95 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46889  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:51:23  

Additional Information
 Earth MOID = .814323 au 
 Jupiter MOID = 2.31376 au 
 T_jup = 3.494 
[ 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 15.8   n/a MPO401062  
diameter diameter 2.066 km 0.253 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.344   0.120 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120447 (1981 EP32)          Discovered 1981-Mar-07 by Bus, S. J. at Siding Spring
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1981 EP32 = 2000 RL6 
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-26 16:54 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin