Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1317293065422048 3.5945e-08  
a 2.591192462476414 1.433e-08 au
q 2.249856476277008 9.2698e-08 au
i 13.76012647330067 6.4974e-06 deg
node 229.4320953077087 1.5156e-05 deg
peri 118.7956083376459 3.0866e-05 deg
M 347.33629345088 2.7711e-05 deg
tp 2459054.092778301274
(2020-Jul-23.59277830)
0.00011752 TDB
period 1523.519209294963
4.17
1.2638e-05
3.46e-08
d
yr
n .2362950186670746 1.9602e-09 deg/d
Q 2.932528448675821 1.6218e-08 au
  Orbit Determination Parameters
   # obs. used (total)      828  
   data-arc span      8137 days (22.28 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55184  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 03:37:22  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-29 21:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin