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39929 (1998 FZ71)
Classification: Main-belt Asteroid          SPK-ID: 2039929
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1774324616360872 3.23e-08  
a 2.387163778032878 7.7184e-09 au
q 1.963603432568002 7.8821e-08 au
i 2.008073353611181 3.9796e-06 deg
node 323.5949399612067 9.6576e-05 deg
peri 316.0552249727127 9.7191e-05 deg
M 290.8081021194749 1.1549e-05 deg
tp 2459259.425303067906
(2021-Feb-13.92530307)
4.3738e-05 TDB
period 1347.167977172686
3.69
6.5337e-06
1.789e-08
d
yr
n .2672272545815224 1.296e-09 deg/d
Q 2.810724123497753 9.0879e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1269  
   data-arc span      8075 days (22.11 yr)  
   first obs. used      1998-03-20  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53693  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:47:31  

Additional Information
 Earth MOID = .94776 au 
 Jupiter MOID = 2.32488 au 
 T_jup = 3.512 
[ 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 15.2   n/a MPO302294  
diameter diameter 2.056 km 0.606 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.033 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.418   0.263 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39929 (1998 FZ71)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 FZ71 = 1999 TW2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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