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 ]  
59434 (1999 GR18)
Classification: Main-belt Asteroid          SPK-ID: 2059434
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2150344503733263 4.2286e-08  
a 2.589960129463299 1.576e-08 au
q 2.033029476535329 1.1311e-07 au
i 12.47094232084795 7.2201e-06 deg
node 67.58840020150514 1.9639e-05 deg
peri 81.48730766165191 2.8749e-05 deg
M 54.53423237466816 2.2866e-05 deg
tp 2458769.875868395266
(2019-Oct-13.37586840)
9.5274e-05 TDB
period 1522.432493544555
4.17
1.3896e-05
3.805e-08
d
yr
n .2364636865847768 2.1583e-09 deg/d
Q 3.146890782391269 1.9149e-08 au
  Orbit Determination Parameters
   # obs. used (total)      884  
   data-arc span      10489 days (28.72 yr)  
   first obs. used      1991-05-17  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50323  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:47:37  

Additional Information
 Earth MOID = 1.08811 au 
 Jupiter MOID = 2.01622 au 
 T_jup = 3.355 
[ 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 14.9   n/a MPO502545  
diameter diameter 6.702 km 1.335 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.043   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

59434 (1999 GR18)          Discovered 1999-Apr-15 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 GR18 = 1991 KY1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Mar-30 17:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin