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JPL Small-Body Database Browser
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59473 (1999 HT1)
Classification: Main-belt Asteroid          SPK-ID: 2059473
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1443991634079747 3.9734e-08  
a 2.652882050213099 1.4626e-08 au
q 2.269808101542295 1.0941e-07 au
i 5.563236742124114 4.1262e-06 deg
node 95.32363148692808 4.4557e-05 deg
peri 267.6640889546446 4.6693e-05 deg
M 185.4670735536901 1.4797e-05 deg
tp 2459765.656388531758
(2022-Jul-05.15638853)
6.7246e-05 TDB
period 1578.248331017181
4.32
1.3052e-05
3.573e-08
d
yr
n .2281009857098852 1.8864e-09 deg/d
Q 3.035955998883904 1.6738e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1193  
   data-arc span      8148 days (22.31 yr)  
   first obs. used      1996-11-14  
   last obs. used      2019-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52847  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:38:55  

Additional Information
 Earth MOID = 1.27563 au 
 Jupiter MOID = 2.43494 au 
 T_jup = 3.368 
[ 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 14.3   n/a MPO337725  
diameter diameter 5.423 km 0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.43277 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.095   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59473 (1999 HT1)          Discovered 1999-Apr-19 by LINEAR at Visnjan
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 HT1 = 2000 RU105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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