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100257 (1994 SF9)
Classification: Main-belt Asteroid          SPK-ID: 2100257
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04405172681476265 4.3588e-08  
a 2.645989585786536 1.3458e-08 au
q 2.52942917539876 1.1374e-07 au
i 2.487253798216369 4.8378e-06 deg
node 177.0484618787974 9.324e-05 deg
peri 191.0463512222491 0.00010825 deg
M 31.77515474353395 5.2626e-05 deg
tp 2459061.739519152967
(2020-Jul-31.23951915)
0.00023008 TDB
period 1572.101646966713
4.30
1.1994e-05
3.284e-08
d
yr
n .2289928267008695 1.7471e-09 deg/d
Q 2.762549996174311 1.4051e-08 au
  Orbit Determination Parameters
   # obs. used (total)      474  
   data-arc span      9602 days (26.29 yr)  
   first obs. used      1994-09-28  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52088  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:24:50  

Additional Information
 Earth MOID = 1.52596 au 
 Jupiter MOID = 2.42362 au 
 T_jup = 3.390 
[ 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 16.23   n/a E2021B55  

100257 (1994 SF9)          Discovered 1994-Sep-28 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1994 SF9 = 1996 AW16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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