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 ]  
20620 (1999 SW10)
Classification: Main-belt Asteroid          SPK-ID: 2020620
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2007952895567481 7.5941e-08  
a 2.914067277043658 1.6143e-08 au
q 2.328936294361832 2.1889e-07 au
i 15.68202859904738 5.7041e-06 deg
node 55.10933754937337 1.444e-05 deg
peri 285.4177265636922 2.1222e-05 deg
M 6.968802058559514 1.8153e-05 deg
tp 2458565.327485586820
(2019-Mar-22.82748559)
9.1549e-05 TDB
period 1816.970130926916
4.97
1.5098e-05
4.134e-08
d
yr
n .1981320407377023 1.6464e-09 deg/d
Q 3.499198259725484 1.9384e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1360  
   data-arc span      8280 days (22.67 yr)  
   first obs. used      1997-04-06  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49789  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:45:35  

Additional Information
 Earth MOID = 1.37943 au 
 Jupiter MOID = 2.18405 au 
 T_jup = 3.197 
[ 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 13.9   n/a MPO333009  
diameter diameter 4.249 km 0.361 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.324   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20620 (1999 SW10)          Discovered 1999-Sep-30 by CSS at Catalina
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 SW10 = 1998 KO41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-24 08:28 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin