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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1788511971829073 3.5123e-08  
a 3.108962640117546 2.0576e-08 au
q 2.55292094993559 1.0719e-07 au
i 15.48907521099267 5.0583e-06 deg
node 200.2346488475716 1.4952e-05 deg
peri 289.1085636592787 2.1087e-05 deg
M 97.33812074582144 1.3717e-05 deg
tp 2458659.120086639079
(2019-Jun-24.62008664)
7.5852e-05 TDB
period 2002.265580192005
5.48
1.9878e-05
5.442e-08
d
yr
n .1797963284997778 1.785e-09 deg/d
Q 3.665004330299501 2.4257e-08 au
  Orbit Determination Parameters
   # obs. used (total)      727  
   data-arc span      9857 days (26.99 yr)  
   first obs. used      1993-06-16  
   last obs. used      2020-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56086  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:47:30  

Additional Information
 Earth MOID = 1.61561 au 
 Jupiter MOID = 1.62312 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 14.75   n/a E2021B10  

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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