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JPL Small-Body Database Browser
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40000 (1998 HZ87)
Classification: Main-belt Asteroid          SPK-ID: 2040000
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1317293081644831 3.6176e-08  
a 2.591192465368481 1.5476e-08 au
q 2.249856474584469 9.2879e-08 au
i 13.76012698619096 6.7799e-06 deg
node 229.4320955141268 1.525e-05 deg
peri 118.7956135896831 3.2998e-05 deg
M 347.3362871158328 3.0699e-05 deg
tp 2459054.092805200904
(2020-Jul-23.59280520)
0.00013022 TDB
period 1523.519211845595
4.17
1.3649e-05
3.737e-08
d
yr
n .2362950182714763 2.1169e-09 deg/d
Q 2.932528456152492 1.7515e-08 au
  Orbit Determination Parameters
   # obs. used (total)      796  
   data-arc span      7765 days (21.26 yr)  
   first obs. used      1998-04-21  
   last obs. used      2019-07-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55871  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:40:50  

Additional Information
 Earth MOID = 1.28136 au 
 Jupiter MOID = 2.56742 au 
 T_jup = 3.367 
[ 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 14.9   n/a MPO337582  

40000 (1998 HZ87)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HZ87 = 1999 TD107 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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