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JPL Small-Body Database Browser
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74030 (1998 HF21)
Classification: Main-belt Asteroid          SPK-ID: 2074030
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08320290076063662 4.0668e-08  
a 2.295627132244695 1.136e-08 au
q 2.104624295777115 9.549e-08 au
i 7.377977687618912 5.1463e-06 deg
node 24.73579431589986 3.6995e-05 deg
peri 241.1100918282003 5.0383e-05 deg
M 315.0072274913921 3.3987e-05 deg
tp 2458759.278138295772
(2019-Oct-02.77813830)
0.00011993 TDB
period 1270.429151160712
3.48
9.43e-06
2.582e-08
d
yr
n .2833688125552617 2.1034e-09 deg/d
Q 2.486629968712275 1.2305e-08 au
  Orbit Determination Parameters
   # obs. used (total)      742  
   data-arc span      7711 days (21.11 yr)  
   first obs. used      1998-03-31  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52865  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:40:55  

Additional Information
 Earth MOID = 1.10059 au 
 Jupiter MOID = 2.5655 au 
 T_jup = 3.580 
[ 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 15.9   n/a MPO337816  

74030 (1998 HF21)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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