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 ]  
39773 (1997 GR23)
Classification: Main-belt Asteroid          SPK-ID: 2039773
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2105816923725621 3.2606e-08  
a 3.01255363008141 1.5696e-08 au
q 2.378164988295761 9.5966e-08 au
i 6.66628564799108 5.6161e-06 deg
node 33.24367491685476 3.0913e-05 deg
peri 265.3353524737221 3.3916e-05 deg
M 98.49234347709996 1.3995e-05 deg
tp 2458477.982816012367
(2018-Dec-25.48281601)
7.3708e-05 TDB
period 1909.855929860005
5.23
1.4926e-05
4.087e-08
d
yr
n .188495893523439 1.4732e-09 deg/d
Q 3.646942271867058 1.9002e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1149  
   data-arc span      8785 days (24.05 yr)  
   first obs. used      1996-01-15  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56008  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:35:50  

Additional Information
 Earth MOID = 1.37425 au 
 Jupiter MOID = 1.65039 au 
 T_jup = 3.205 
[ 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 14.4   n/a MPO502431  
diameter diameter 5.263 km 0.969 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.121   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39773 (1997 GR23)          Discovered 1997-Apr-06 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 GR23 = 1996 AZ19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jun-04 22:15 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin