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 ]  
20684 (1999 VW44)
Classification: Main-belt Asteroid          SPK-ID: 2020684
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .104075269701018 3.7773e-08  
a 2.780791004260066 1.2631e-08 au
q 2.491379430509535 1.0288e-07 au
i 8.668774962638979 4.7182e-06 deg
node 343.5231556361421 2.4448e-05 deg
peri 151.6748791731468 3.3526e-05 deg
M 102.6555947795942 2.2003e-05 deg
tp 2458717.517856625523
(2019-Aug-22.01785663)
0.000103 TDB
period 1693.756409362057
4.64
1.154e-05
3.159e-08
d
yr
n .2125453211631488 1.4481e-09 deg/d
Q 3.070202578010596 1.3945e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1594  
   data-arc span      9436 days (25.83 yr)  
   first obs. used      1994-08-31  
   last obs. used      2020-07-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46414  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:26:59  

Additional Information
 Earth MOID = 1.5083 au 
 Jupiter MOID = 1.95167 au 
 T_jup = 3.309 
[ 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 13.87   n/a E2021B10  
diameter diameter 4.652 km 0.220 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.270   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20684 (1999 VW44)          Discovered 1999-Nov-04 by CSS at Catalina
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ 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 2021-Apr-21 13:32 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin