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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
21940 (1999 VU91)
Classification: Main-belt Asteroid          SPK-ID: 2021940
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07410837904044681 3.748e-08  
a 2.603273360340709 1.1686e-08 au
q 2.410348991406682 9.4186e-08 au
i 14.36640011038853 3.747e-06 deg
node 161.0732206592646 1.8189e-05 deg
peri 157.9970659668423 3.5883e-05 deg
M 132.5025231611999 3.0997e-05 deg
tp 2458831.823471968827
(2019-Dec-14.32347197)
0.0001317 TDB
period 1534.186257297996
4.20
1.033e-05
2.828e-08
d
yr
n .2346520823579993 1.58e-09 deg/d
Q 2.796197729274736 1.2552e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1396  
   data-arc span      8789 days (24.06 yr)  
   first obs. used      1997-02-12  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50544  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:38:09  

Additional Information
 Earth MOID = 1.40294 au 
 Jupiter MOID = 2.49972 au 
 T_jup = 3.365 
[ 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 14.52   n/a E2021B10  
diameter diameter 3.087 km 0.238 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.353   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21940 (1999 VU91)          Discovered 1999-Nov-07 by LINEAR at Socorro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 VU91 = 1997 CL29 = 1998 MB12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-20 12:25 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin