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74235 (1998 SF42)
Classification: Main-belt Asteroid          SPK-ID: 2074235
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .120883513709684 6.6426e-08  
a 2.65015591975635 1.9244e-08 au
q 2.329795760297683 1.8409e-07 au
i 1.708884786960091 6.1591e-06 deg
node 161.8090516653267 0.00018092 deg
peri 164.5118933507052 0.00018225 deg
M 25.92144462062628 2.1167e-05 deg
tp 2458887.034908786913
(2020-Feb-07.53490879)
9.2372e-05 TDB
period 1575.816218368013
4.31
1.7164e-05
4.699e-08
d
yr
n .2284530364669253 2.4883e-09 deg/d
Q 2.970516079215016 2.157e-08 au
  Orbit Determination Parameters
   # obs. used (total)      407  
   data-arc span      8614 days (23.58 yr)  
   first obs. used      1996-01-19  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57336  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:43:27  

Additional Information
 Earth MOID = 1.31809 au 
 Jupiter MOID = 2.33118 au 
 T_jup = 3.380 
[ 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 16.0   n/a MPO436302  
rotation period rot_per 4.35 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

74235 (1998 SF42)          Discovered 1998-Sep-27 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SF42 = 2001 FK173 = 2002 NW45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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