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 ]  
376721 (1997 GR30)
Classification: Mars-crossing Asteroid          SPK-ID: 2376721
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2689986750178657 9.3282e-08  
a 2.117371814153286 1.6823e-08 au
q 1.547801601625878 1.9693e-07 au
i 4.796166122688605 9.0533e-06 deg
node 191.4413543760071 5.2534e-05 deg
peri 89.06180526282451 5.9795e-05 deg
M 124.83194952982 2.2969e-05 deg
tp 2458610.272950252394
(2019-May-06.77295025)
7.4482e-05 TDB
period 1125.366850700185
3.08
1.3412e-05
3.672e-08
d
yr
n .3198956853722977 3.8124e-09 deg/d
Q 2.686942026680695 2.1348e-08 au
  Orbit Determination Parameters
   # obs. used (total)      179  
   data-arc span      8239 days (22.56 yr)  
   first obs. used      1997-04-08  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53431  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 12:29:52  

Additional Information
 Earth MOID = .541589 au 
 Jupiter MOID = 2.47819 au 
 T_jup = 3.682 
[ 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 18.0   n/a MPO494943  

376721 (1997 GR30)          Discovered 1997-Apr-08 by Spacewatch at Kitt Peak
Reference: Last Updated: 2013-11-20
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Mar-29 00:54 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin