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 ]  
100846 (1998 HW25)
Classification: Main-belt Asteroid          SPK-ID: 2100846
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1359586836386899 3.8086e-08  
a 2.226395586554165 7.0099e-09 au
q 1.923697773347272 8.6631e-08 au
i 6.414623034824364 4.2068e-06 deg
node 40.96895304765024 2.6867e-05 deg
peri 323.3129369300612 2.9765e-05 deg
M 130.8289024724642 1.1507e-05 deg
tp 2458759.536012782327
(2019-Oct-03.03601278)
3.9263e-05 TDB
period 1213.394230160833
3.32
5.7306e-06
1.569e-08
d
yr
n .2966884060032844 1.4012e-09 deg/d
Q 2.529093399761059 7.963e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1147  
   data-arc span      8332 days (22.81 yr)  
   first obs. used      1998-03-29  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4855  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:26:21  

Additional Information
 Earth MOID = .925157 au 
 Jupiter MOID = 2.93416 au 
 T_jup = 3.625 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO439690  

100846 (1998 HW25)          Discovered 1998-Apr-20 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Feb-28 17:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin