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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08318358401331562 3.917e-08  
a 2.295372277028598 1.0567e-08 au
q 2.104434984380554 9.2142e-08 au
i 7.376416310704286 4.8662e-06 deg
node 24.69965484130944 3.2063e-05 deg
peri 240.7287008180154 4.5824e-05 deg
M 68.72067875090822 3.1336e-05 deg
tp 2458758.027179393284
(2019-Oct-01.52717939)
0.00011077 TDB
period 1270.217596872383
3.48
8.7715e-06
2.402e-08
d
yr
n .2834160075300616 1.9571e-09 deg/d
Q 2.486309569676642 1.1446e-08 au
  Orbit Determination Parameters
   # obs. used (total)      801  
   data-arc span      8156 days (22.33 yr)  
   first obs. used      1998-03-31  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52231  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:09:55  

Additional Information
 Earth MOID = 1.10068 au 
 Jupiter MOID = 2.56437 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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