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JPL Small-Body Database Browser
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27696 (1981 EG40)
Classification: Outer Main-belt Asteroid          SPK-ID: 2027696
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2134594823465548 3.6909e-08  
a 3.203261365451839 1.7404e-08 au
q 2.519494852561771 1.2192e-07 au
i 1.857883274787465 4.212e-06 deg
node 147.2123091959638 0.0001376 deg
peri 276.8776994324109 0.00013809 deg
M 18.47876464215425 1.0051e-05 deg
tp 2458893.012633207415
(2020-Feb-13.51263321)
5.8289e-05 TDB
period 2094.049726520008
5.73
1.7066e-05
4.672e-08
d
yr
n .1719156882669951 1.4011e-09 deg/d
Q 3.887027878341907 2.1119e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1349  
   data-arc span      15131 days (41.43 yr)  
   first obs. used      1978-09-02  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5182  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:08:42  

Additional Information
 Earth MOID = 1.53376 au 
 Jupiter MOID = 1.44999 au 
 T_jup = 3.157 
[ 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 14.1   n/a MPO502365  

27696 (1981 EG40)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EG40 = 1978 RO9 = 1997 XU4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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