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JPL Small-Body Database Browser
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19474 (1998 HJ80)
Classification: Outer Main-belt Asteroid          SPK-ID: 2019474
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07841669340378268 3.5864e-08  
a 3.235117591844937 2.11e-08 au
q 2.981430367520049 1.1444e-07 au
i 5.506673088502435 4.7301e-06 deg
node 22.14448280520737 4.4214e-05 deg
peri 251.7070983889279 5.7196e-05 deg
M 235.2818809483922 3.903e-05 deg
tp 2459736.809807752663
(2022-Jun-06.30980775)
0.00023354 TDB
period 2125.365045645638
5.82
2.0793e-05
5.693e-08
d
yr
n .1693826671034952 1.6571e-09 deg/d
Q 3.488804816169826 2.2755e-08 au
  Orbit Determination Parameters
   # obs. used (total)      856  
   data-arc span      10161 days (27.82 yr)  
   first obs. used      1992-04-07  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57964  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:48:51  

Additional Information
 Earth MOID = 1.97151 au 
 Jupiter MOID = 1.61367 au 
 T_jup = 3.173 
[ 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 14.2   n/a MPO431723  

19474 (1998 HJ80)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HJ80 = 1994 TO5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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