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 ]  
21235 (1995 WG2)
Classification: Main-belt Asteroid          SPK-ID: 2021235
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1102659748664196 3.5047e-08  
a 2.664598166984925 1.1702e-08 au
q 2.370783652475058 9.0428e-08 au
i 10.67841357864835 3.1713e-06 deg
node 247.4535458874537 1.9951e-05 deg
peri 258.3921175647926 2.6624e-05 deg
M 210.3995960314502 2.0258e-05 deg
tp 2459860.701154676000
(2022-Oct-08.20115468)
9.1938e-05 TDB
period 1588.715066125927
4.35
1.0466e-05
2.865e-08
d
yr
n .2265982161784731 1.4927e-09 deg/d
Q 2.958412681494793 1.2992e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1756  
   data-arc span      12918 days (35.37 yr)  
   first obs. used      1985-09-07  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46128  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:42:04  

Additional Information
 Earth MOID = 1.41077 au 
 Jupiter MOID = 2.18599 au 
 T_jup = 3.351 
[ 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 13.83   n/a E2021B10  
diameter diameter 6.539 km 0.308 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.150   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21235 (1995 WG2)          Discovered 1995-Nov-18 by Kobayashi, T. at Oizumi
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1995 WG2 = 1992 AA5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-20 11:55 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin