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JPL Small-Body Database Browser
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58831 (1998 HN30)
Classification: Main-belt Asteroid          SPK-ID: 2058831
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01932411655697426 3.353e-08  
a 2.715253591066935 1.2905e-08 au
q 2.662783714191415 9.178e-08 au
i 3.109935548660036 3.8857e-06 deg
node 101.932232352775 8.6028e-05 deg
peri 139.0255577546814 0.00015399 deg
M 297.9519331950378 0.0001281 deg
tp 2459282.169469749772
(2021-Mar-08.66946975)
0.00058149 TDB
period 1634.233173269607
4.47
1.1651e-05
3.19e-08
d
yr
n .2202868023292837 1.5705e-09 deg/d
Q 2.767723467942455 1.3154e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1194  
   data-arc span      17926 days (49.08 yr)  
   first obs. used      1971-03-25  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55302  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 11:40:13  

Additional Information
 Earth MOID = 1.65004 au 
 Jupiter MOID = 2.20494 au 
 T_jup = 3.359 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457270.5 (2015-Sep-05.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02036292771773993 3.4044e-08  
q 2.66196758173408 9.342e-08 au
tp 2457630.582167212160
(2016-Aug-30.08216721)
0.00054653 TDB
node 101.9728461884418 8.5996e-05 deg
peri 135.2400991671072 0.00014752 deg
i 3.11010075913371 3.8862e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1194  
   data-arc span      17926 days (49.08 yr)  
   first obs. used      1971-03-25  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55302  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 11:40:13  

Additional Information
 Jupiter MOID = 2.20494 au 
 T_jup = 3.359 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.15898845191685E-15 -3.151135208918674E-15 -4.096143747020143E-12 1.958437091487195E-15 -8.804738067913479E-13 -2.704307630825879E-16
q -3.151135208918674E-15 8.727213219998097E-15 1.114590185293441E-11 -5.139611086266294E-15 2.38624632740381E-12 7.842665630438184E-16
tp -4.096143747020143E-12 1.114590185293441E-11 2.98698374898965E-7 8.025798176273148E-11 6.553910374535154E-8 5.567289023841276E-12
node 1.958437091487195E-15 -5.139611086266294E-15 8.025798176273148E-11 7.395326789491125E-9 -7.366425815833297E-9 8.314364186651777E-11
peri -8.804738067913479E-13 2.38624632740381E-12 6.553910374535154E-8 -7.366425815833297E-9 2.176278883861863E-8 -8.180161690522091E-11
i -2.704307630825879E-16 7.842665630438184E-16 5.567289023841276E-12 8.314364186651777E-11 -8.180161690522091E-11 1.51028809014402E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO365931  

58831 (1998 HN30)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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