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JPL Small-Body Database Browser
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74048 (1998 HP121)
Classification: Main-belt Asteroid          SPK-ID: 2074048
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1059007659397034 3.8227e-08  
a 2.251274858204899 9.9621e-09 au
q 2.012863126380203 8.4752e-08 au
i 5.699602279031483 3.925e-06 deg
node 100.704434001205 4.0542e-05 deg
peri 87.85924310850994 4.4663e-05 deg
M 102.9664448882583 1.971e-05 deg
tp 2458247.614002305985
(2018-May-09.11400231)
6.6735e-05 TDB
period 1233.789894442903
3.38
8.1895e-06
2.242e-08
d
yr
n .2917838779693944 1.9368e-09 deg/d
Q 2.489686590029595 1.1017e-08 au
  Orbit Determination Parameters
   # obs. used (total)      651  
   data-arc span      7886 days (21.59 yr)  
   first obs. used      1998-04-24  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59156  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:44:24  

Additional Information
 Earth MOID = 1.02352 au 
 Jupiter MOID = 2.48131 au 
 T_jup = 3.613 
[ 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 16.2   n/a MPO436300  

74048 (1998 HP121)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HP121 = 2001 CM17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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