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 ]  
121000 (1998 YG2)
Classification: Main-belt Asteroid          SPK-ID: 2121000
[ 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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1866814661256123 3.3375e-08  
a 2.32342639703866 8.4377e-09 au
q 1.889685750804534 7.8686e-08 au
i 5.296455583333346 5.2103e-06 deg
node 305.9473346144619 4.9207e-05 deg
peri 110.3258021174723 5.2151e-05 deg
M 63.87475988030228 1.6346e-05 deg
tp 2458770.981030463044
(2019-Oct-14.48103046)		 5.833e-05 TDB
period 1293.575571761711
3.54		 7.0466e-06
1.929e-08		 d
yr
n .2782983908004065 1.516e-09 deg/d
Q 2.757167043272787 1.0013e-08 au
   Orbit Determination Parameters
   # obs. used (total)      809  
   data-arc span      7713 days (21.12 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5448  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 06:25:42  

Additional Information
 Earth MOID = .909458 au 
 Jupiter MOID = 2.59918 au 
 T_jup = 3.547 
[ 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 15.7   n/a MPO453680  
diameter diameter 2.569 km 1.149 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.169   0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

121000 (1998 YG2)          Discovered 1998-Dec-17 by ODAS at Caussols
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-26 20:18 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin