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JPL Small-Body Database Browser
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39936 (1998 FZ85)
Classification: Main-belt Asteroid          SPK-ID: 2039936
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1639413528506504 3.9831e-08  
a 2.305361532739116 9.2219e-09 au
q 1.927417444252016 9.3944e-08 au
i 7.368595597005863 3.7288e-06 deg
node 131.176699862251 3.2949e-05 deg
peri 156.2990425304028 3.5017e-05 deg
M 270.7677270308225 1.3713e-05 deg
tp 2458917.403069070403
(2020-Mar-08.90306907)
4.9461e-05 TDB
period 1278.518422418222
3.50
7.6715e-06
2.1e-08
d
yr
n .281575919194881 1.6895e-09 deg/d
Q 2.683305621226216 1.0734e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1097  
   data-arc span      9243 days (25.31 yr)  
   first obs. used      1994-01-14  
   last obs. used      2019-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55009  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:12:08  

Additional Information
 Earth MOID = .913035 au 
 Jupiter MOID = 2.49092 au 
 T_jup = 3.559 
[ 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 15.3   n/a MPO385071  
rotation period rot_per 4.16 h n/a LCDB (Rev. 2019-January); 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.]

39936 (1998 FZ85)          Discovered 1998-Mar-24 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 FZ85 = 1999 RK221 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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