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 ]  
101801 (1999 HS8)
Classification: Main-belt Asteroid          SPK-ID: 2101801
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1273596792755012 4.1708e-08  
a 2.634547859992156 1.0901e-08 au
q 2.299012689507597 1.1096e-07 au
i 1.46021984983152 3.2972e-06 deg
node 250.9078519327849 0.00017303 deg
peri 271.77772578 0.00017364 deg
M 54.23776289528642 1.3106e-05 deg
tp 2458965.181087288554
(2020-Apr-25.68108729)
5.6874e-05 TDB
period 1561.915611078471
4.28
9.6944e-06
2.654e-08
d
yr
n .2304862038938374 1.4306e-09 deg/d
Q 2.970083030476715 1.229e-08 au
  Orbit Determination Parameters
   # obs. used (total)      864  
   data-arc span      10080 days (27.60 yr)  
   first obs. used      1992-10-01  
   last obs. used      2020-05-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59306  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:38:41  

Additional Information
 Earth MOID = 1.30727 au 
 Jupiter MOID = 2.01193 au 
 T_jup = 3.386 
[ 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 15.72   n/a E2021B55  

101801 (1999 HS8)          Discovered 1999-Apr-17 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 HS8 = 2001 WA20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-20 04:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin