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 ]  
137000 (1998 SH78)
Classification: Main-belt Asteroid          SPK-ID: 2137000
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09598872326502858 5.1745e-08  
a 2.437018848955286 1.3202e-08 au
q 2.203092521071259 1.2592e-07 au
i 3.568071737984265 4.753e-06 deg
node 286.8448680986976 7.9402e-05 deg
peri 56.22197852049732 8.1942e-05 deg
M 161.174792549022 2.0601e-05 deg
tp 2457978.369664541086
(2017-Aug-12.86966454)
7.8544e-05 TDB
period 1389.590253060748
3.80
1.1292e-05
3.092e-08
d
yr
n .2590691746772508 2.1052e-09 deg/d
Q 2.670945176839314 1.447e-08 au
  Orbit Determination Parameters
   # obs. used (total)      432  
   data-arc span      21320 days (58.37 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-02-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57601  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:03:29  

Additional Information
 Earth MOID = 1.19626 au 
 Jupiter MOID = 2.6507 au 
 T_jup = 3.495 
[ 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 16.3   n/a MPO436676  

137000 (1998 SH78)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

Alternate Designations
 1998 SH78 = 4210 P-L 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin