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79704 (1998 SF90)
Classification: Main-belt Asteroid          SPK-ID: 2079704
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09436373362384967 2.8459e-08  
a 2.393358176923598 9.4497e-09 au
q 2.167511963449917 6.6336e-08 au
i 5.816644588711964 5.1193e-06 deg
node 326.5647325411508 3.1677e-05 deg
peri 289.885440446316 4.309e-05 deg
M 46.88099394925216 2.9151e-05 deg
tp 2458824.381781666946
(2019-Dec-06.88178167)
0.00010954 TDB
period 1352.414982253393
3.70
8.0096e-06
2.193e-08
d
yr
n .2661904849650278 1.5765e-09 deg/d
Q 2.619204390397278 1.0341e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1184  
   data-arc span      8082 days (22.13 yr)  
   first obs. used      1998-09-15  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49772  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:22:19  

Additional Information
 Earth MOID = 1.16081 au 
 Jupiter MOID = 2.4462 au 
 T_jup = 3.517 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457532.5 (2016-May-24.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09345971945065502 2.8494e-08  
q 2.169186523048901 6.6309e-08 au
tp 2457472.289262889009
(2016-Mar-24.78926289)
0.00011106 TDB
node 326.6124496786045 3.1694e-05 deg
peri 289.8905261601475 4.3269e-05 deg
i 5.815099653607353 5.1182e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1184  
   data-arc span      8082 days (22.13 yr)  
   first obs. used      1998-09-15  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49772  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:22:19  

Additional Information
 Jupiter MOID = 2.4462 au 
 T_jup = 3.517 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.118823200375428E-16 -1.874857519898267E-15 3.792765805431284E-13 -1.003474202067618E-15 8.623263577840489E-14 6.892716743728296E-16
q -1.874857519898267E-15 4.396834768404179E-15 -1.014697694718309E-12 1.856866695017841E-15 -2.33915572530524E-13 -1.402266505219772E-15
tp 3.792765805431284E-13 -1.014697694718309E-12 1.233413287551054E-8 -5.808761435808408E-12 3.278280723509197E-9 -2.395176160508189E-12
node -1.003474202067618E-15 1.856866695017841E-15 -5.808761435808408E-12 1.004503188986345E-9 -1.000488765308339E-9 4.525285256521263E-11
peri 8.623263577840489E-14 -2.33915572530524E-13 3.278280723509197E-9 -1.000488765308339E-9 1.872233349209233E-9 -4.569005151426442E-11
i 6.892716743728296E-16 -1.402266505219772E-15 -2.395176160508189E-12 4.525285256521263E-11 -4.569005151426442E-11 2.619614886536628E-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 15.3   n/a MPO432346  
rotation period rot_per 6.40 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

79704 (1998 SF90)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 1998 SF90 = 2002 TX282 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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