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20299 (1998 FH78)
Classification: Main-belt Asteroid          SPK-ID: 2020299
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03296215144070823 3.2236e-08  
a 2.645445588284057 1.2738e-08 au
q 2.558246010174885 8.7552e-08 au
i 13.50575324245069 4.5602e-06 deg
node 175.7113481951289 1.5746e-05 deg
peri 71.28904635875571 7.3182e-05 deg
M 56.24759999457637 7.0989e-05 deg
tp 2458954.945344384731
(2020-Apr-15.44534438)
0.00031001 TDB
period 1571.616851741598
4.30
1.1352e-05
3.108e-08
d
yr
n .2290634639104713 1.6545e-09 deg/d
Q 2.732645166393229 1.3158e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1097  
   data-arc span      9122 days (24.97 yr)  
   first obs. used      1995-09-17  
   last obs. used      2020-09-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55481  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:16:38  

Additional Information
 Earth MOID = 1.58047 au 
 Jupiter MOID = 2.26515 au 
 T_jup = 3.353 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.81   n/a E2021B10  
diameter diameter 5.183 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 92.4923 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 0.104   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20299 (1998 FH78)          Discovered 1998-Mar-24 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 FH78 = 1995 SH15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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