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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
136890 (1998 HO20)
Classification: Main-belt Asteroid          SPK-ID: 2136890
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2889229682191766 4.6034e-08  
a 3.037135567704304 1.4478e-08 au
q 2.159637344599142 1.3866e-07 au
i 10.36056262720355 6.6244e-06 deg
node 26.42010715959634 2.3415e-05 deg
peri 131.8741829929915 2.5424e-05 deg
M 15.25533653485318 8.2612e-06 deg
tp 2458518.575464907122
(2019-Feb-04.07546491)
4.4171e-05 TDB
period 1933.279712712682
5.29
1.3824e-05
3.785e-08
d
yr
n .1862120611067013 1.3315e-09 deg/d
Q 3.914633790809466 1.8661e-08 au
  Orbit Determination Parameters
   # obs. used (total)      647  
   data-arc span      7720 days (21.14 yr)  
   first obs. used      1998-03-22  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54534  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:13:29  

Additional Information
 Earth MOID = 1.1839 au 
 Jupiter MOID = 1.15443 au 
 T_jup = 3.152 
[ 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 14.8   n/a MPO436675  

136890 (1998 HO20)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1998 HO20 = 2001 UT169 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin