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212746 (2007 SF20)
Classification: Main-belt Asteroid          SPK-ID: 2212746
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2018203262588312 4.3145e-08  
a 2.578988464426724 2.0193e-08 au
q 2.058496171118361 1.0994e-07 au
i 2.872263989587312 8.2936e-06 deg
node 205.1422830508188 7.3494e-05 deg
peri 104.2636160644327 7.7696e-05 deg
M 92.66749282946952 2.0891e-05 deg
tp 2458611.098662772509
(2019-May-07.59866277)
8.8907e-05 TDB
period 1512.768686424591
4.14
1.7767e-05
4.864e-08
d
yr
n .23797425424693 2.7949e-09 deg/d
Q 3.099480757735087 2.4268e-08 au
  Orbit Determination Parameters
   # obs. used (total)      361  
   data-arc span      9265 days (25.37 yr)  
   first obs. used      1994-08-10  
   last obs. used      2019-12-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55965  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 03:59:01  

Additional Information
 Earth MOID = 1.04631 au 
 Jupiter MOID = 2.17853 au 
 T_jup = 3.395 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457308.5 (2015-Oct-13.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2027457457317702 4.3315e-08  
q 2.055786113097045 1.1075e-07 au
tp 2457099.933374818542
(2015-Mar-18.43337482)
9.5057e-05 TDB
node 205.1540052407928 7.3467e-05 deg
peri 104.520389442578 7.7644e-05 deg
i 2.872433332898199 8.2989e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      361  
   data-arc span      9265 days (25.37 yr)  
   first obs. used      1994-08-10  
   last obs. used      2019-12-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55965  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 03:59:01  

Additional Information
 Jupiter MOID = 2.17853 au 
 T_jup = 3.395 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.876190104120801E-15 -4.746225600123274E-15 1.8686593940305E-12 -1.757738679845635E-14 4.531586201462812E-13 -1.500549867474117E-15
q -4.746225600123274E-15 1.226656955997756E-14 -5.525017782103509E-12 4.796041652894539E-14 -1.347851805601339E-12 4.037986316563984E-15
tp 1.8686593940305E-12 -5.525017782103509E-12 9.035875596576894E-9 -4.977882111306016E-11 2.391331356076109E-9 -5.04225475947157E-12
node -1.757738679845635E-14 4.796041652894539E-14 -4.977882111306016E-11 5.397337892841742E-9 -5.402493750240127E-9 -1.447572544936683E-10
peri 4.531586201462812E-13 -1.347851805601339E-12 2.391331356076109E-9 -5.402493750240127E-9 6.028566725292189E-9 1.432665206630371E-10
i -1.500549867474117E-15 4.037986316563984E-15 -5.04225475947157E-12 -1.447572544936683E-10 1.432665206630371E-10 6.887157837972624E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.6   n/a MPO440127  

212746 (2007 SF20)          Discovered 2007-Sep-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

Alternate Designations
 2007 SF20 = 1994 PF34 = 2005 EQ190 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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