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 ]  
43980 (1997 GR20)
Classification: Main-belt Asteroid          SPK-ID: 2043980
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 .1423672057749091 5.1086e-08  
a 2.51862812693878 8.9098e-09 au
q 2.160058078120413 1.2815e-07 au
i 1.161204047495728 4.4401e-06 deg
node 28.85073170880334 0.00022072 deg
peri 293.7852716567349 0.00022111 deg
M 220.1959697914418 1.3094e-05 deg
tp 2459767.472103411427
(2022-Jul-06.97210341)
5.4245e-05 TDB
period 1459.971911565243
4.00
7.7471e-06
2.121e-08
d
yr
n .2465800863347037 1.3084e-09 deg/d
Q 2.877198175757147 1.0178e-08 au
  Orbit Determination Parameters
   # obs. used (total)      965  
   data-arc span      11169 days (30.58 yr)  
   first obs. used      1990-08-24  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58767  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:28:06  

Additional Information
 Earth MOID = 1.14596 au 
 Jupiter MOID = 2.41976 au 
 T_jup = 3.443 
[ 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 15.74   n/a E2021B10  
diameter diameter 1.685 km 0.273 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.358   0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43980 (1997 GR20)          Discovered 1997-Apr-06 by LINEAR at Socorro
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 GR20 = 1990 QH19 = 1993 FW78 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-19 13:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin