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JPL Small-Body Database Browser
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52733 (1998 HP21)
Classification: Main-belt Asteroid          SPK-ID: 2052733
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .179326907286801 4.2698e-08  
a 3.110179655430723 2.5179e-08 au
q 2.552440756716003 1.3824e-07 au
i 15.48796959777826 5.1499e-06 deg
node 200.2415966703024 1.9231e-05 deg
peri 289.1308556898545 2.4163e-05 deg
M 349.4275331256376 1.4538e-05 deg
tp 2458659.336993608258
(2019-Jun-24.83699361)
8.107e-05 TDB
period 2003.441387017867
5.49
2.4328e-05
6.661e-08
d
yr
n .1796908071944455 2.182e-09 deg/d
Q 3.667918554145442 2.9694e-08 au
  Orbit Determination Parameters
   # obs. used (total)      567  
   data-arc span      9372 days (25.66 yr)  
   first obs. used      1993-06-16  
   last obs. used      2019-02-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56667  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:07:29  

Additional Information
 Earth MOID = 1.61559 au 
 Jupiter MOID = 1.62332 au 
 T_jup = 3.139 
[ 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 14.7   n/a MPO426285  

52733 (1998 HP21)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HP21 = 2001 SN235 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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