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66440 (1999 NF56)
Classification: Main-belt Asteroid          SPK-ID: 2066440
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .105295509047816 4.3711e-08  
a 2.617291054334232 1.3113e-08 au
q 2.341702060441814 1.2047e-07 au
i 13.13609868704792 3.8809e-06 deg
node 271.9346535667665 1.6984e-05 deg
peri 87.12746914992414 2.5245e-05 deg
M 349.2228221486529 1.8359e-05 deg
tp 2459246.799788505183
(2021-Feb-01.29978851)
7.8929e-05 TDB
period 1546.59448807208
4.23
1.1623e-05
3.182e-08
d
yr
n .2327694833884744 1.7493e-09 deg/d
Q 2.89288004822665 1.4493e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1492  
   data-arc span      16902 days (46.28 yr)  
   first obs. used      1974-10-11  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46227  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:22:12  

Additional Information
 Earth MOID = 1.38048 au 
 Jupiter MOID = 2.53819 au 
 T_jup = 3.362 
[ 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 14.09   n/a E2021B10  
diameter diameter 4.496 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 24.5593 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.152   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66440 (1999 NF56)          Discovered 1999-Jul-12 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 NF56 = 1974 TS1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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