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JPL Small-Body Database Browser
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48394 (1981 EP9)
Classification: Main-belt Asteroid          SPK-ID: 2048394
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1230825979331818 5.6433e-08  
a 2.429837763154336 9.6081e-09 au
q 2.130767018709149 1.3501e-07 au
i 5.138650932100772 4.9123e-06 deg
node 235.4521155214509 4.4946e-05 deg
peri 153.6135102861321 4.7517e-05 deg
M 161.8598360347071 1.5431e-05 deg
tp 2457978.484884970112
(2017-Aug-12.98488497)
5.8806e-05 TDB
period 1383.452787896956
3.79
8.2057e-06
2.247e-08
d
yr
n .2602184932868226 1.5434e-09 deg/d
Q 2.728908507599523 1.0791e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1089  
   data-arc span      13977 days (38.27 yr)  
   first obs. used      1981-02-02  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57019  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:38:02  

Additional Information
 Earth MOID = 1.13683 au 
 Jupiter MOID = 2.69343 au 
 T_jup = 3.492 
[ 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 15.0   n/a MPO436121  

48394 (1981 EP9)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EP9 = 1998 VL29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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