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46769 (1998 HJ2)
Classification: Main-belt Asteroid          SPK-ID: 2046769
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .154462844578352 3.9184e-08  
a 2.207830985116454 7.5749e-09 au
q 1.866803130807142 8.6178e-08 au
i 3.531912190678375 4.1672e-06 deg
node 122.6226330137174 7.1147e-05 deg
peri 185.9254970994276 7.2463e-05 deg
M 241.3596852281608 1.4191e-05 deg
tp 2459595.390742320013
(2022-Jan-15.89074232)
4.788e-05 TDB
period 1198.249241909027
3.28
6.1666e-06
1.688e-08
d
yr
n .300438329029489 1.5462e-09 deg/d
Q 2.548858839425767 8.7449e-09 au
  Orbit Determination Parameters
   # obs. used (total)      844  
   data-arc span      8395 days (22.98 yr)  
   first obs. used      1998-03-29  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57591  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:40:16  

Additional Information
 Earth MOID = .850121 au 
 Jupiter MOID = 2.68338 au 
 T_jup = 3.641 
[ 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 15.96   n/a MPCxxxxx  
rotation period rot_per 32.00 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

46769 (1998 HJ2)          Discovered 1998-Apr-19 by Spacewatch at Kitt Peak
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HJ2 = 1999 XV109 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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