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18682 (1998 FH107)
Classification: Main-belt Asteroid          SPK-ID: 2018682
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09345680646597827 4.3758e-08  
a 2.983146151207414 1.5339e-08 au
q 2.704350838694295 1.3452e-07 au
i 8.441144889370683 2.9397e-06 deg
node 241.5868975350256 3.1647e-05 deg
peri 82.60251161159782 3.6388e-05 deg
M 18.4288502018348 1.6552e-05 deg
tp 2459104.160150736432
(2020-Sep-11.66015074)
8.6622e-05 TDB
period 1881.959284222273
5.15
1.4515e-05
3.974e-08
d
yr
n .1912900045277927 1.4754e-09 deg/d
Q 3.261941463720533 1.6772e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1812  
   data-arc span      9182 days (25.14 yr)  
   first obs. used      1995-11-30  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46246  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:34:49  

Additional Information
 Earth MOID = 1.70701 au 
 Jupiter MOID = 2.01828 au 
 T_jup = 3.236 
[ 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 13.49   n/a E2021B10  
diameter diameter 6.677 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 11.647 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.208   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18682 (1998 FH107)          Discovered 1998-Mar-31 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 FH107 = 1999 NR45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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