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118170 (1981 EV40)
Classification: Main-belt Asteroid          SPK-ID: 2118170
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1305789783982367 4.9291e-08  
a 2.658876107923149 1.789e-08 au
q 2.311682782063065 1.2949e-07 au
i 14.51005774540197 6.1991e-06 deg
node 357.1051035135968 1.6223e-05 deg
peri 39.58780700520251 2.5895e-05 deg
M 189.5588577040741 2.2141e-05 deg
tp 2459950.251795763892
(2023-Jan-05.75179576)
0.00010106 TDB
period 1583.600314097712
4.34
1.5983e-05
4.376e-08
d
yr
n .2273300887826088 2.2944e-09 deg/d
Q 3.006069433783234 2.0226e-08 au
  Orbit Determination Parameters
   # obs. used (total)      793  
   data-arc span      14347 days (39.28 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-05-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53108  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:56:01  

Additional Information
 Earth MOID = 1.33202 au 
 Jupiter MOID = 2.5216 au 
 T_jup = 3.329 
[ 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 14.83   n/a E2021B55  

118170 (1981 EV40)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

Alternate Designations
 1981 EV40 = 2000 SM12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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