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46784 (1998 HK117)
Classification: Main-belt Asteroid          SPK-ID: 2046784
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1030420622476599 3.4512e-08  
a 2.251568795327031 8.8392e-09 au
q 2.019562503364055 7.6757e-08 au
i 7.327846293894948 3.9622e-06 deg
node 79.54601115431997 3.6732e-05 deg
peri 185.6258614486416 4.3818e-05 deg
M 153.3351933128751 2.3689e-05 deg
tp 2458474.887599426561
(2018-Dec-22.38759943)
8.1121e-05 TDB
period 1234.031536519737
3.38
7.2669e-06
1.99e-08
d
yr
n .2917267422640477 1.7179e-09 deg/d
Q 2.483575087290007 9.75e-09 au
  Orbit Determination Parameters
   # obs. used (total)      871  
   data-arc span      7864 days (21.53 yr)  
   first obs. used      1998-04-21  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5782  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:28:56  

Additional Information
 Earth MOID = 1.00394 au 
 Jupiter MOID = 2.57072 au 
 T_jup = 3.609 
[ 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 15.7   n/a MPO344652  
rotation period rot_per 19. 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:
[Warner, B.D. (2011) Minor Planet Bull. 38, 142-149.]

46784 (1998 HK117)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HK117 = 1999 TN283 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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