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 ]  
13423 Bobwoolley (1999 VR22)
Classification: Main-belt Asteroid          SPK-ID: 2013423
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07548505106844618 1.0337e-08  
a 2.748125692311669 1.1365e-08 au
q 2.540683284085014 3.3687e-08 au
i 4.028403650476907 7.218e-07 deg
node 285.4981012784795 1.018e-05 deg
peri 93.33991114733418 1.9469e-05 deg
M 240.7443895996177 1.8366e-05 deg
tp 2459751.725924232962
(2022-Jun-21.22592423)
8.5993e-05 TDB
period 1663.999974991787
4.56
1.0323e-05
2.826e-08
d
yr
n .2163461570976147 1.3421e-09 deg/d
Q 2.955568100538325 1.2223e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2277  
   data-arc span      17885 days (48.97 yr)  
   first obs. used      1971-07-27  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45175  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:56:50  

Additional Information
 Earth MOID = 1.54512 au 
 Jupiter MOID = 2.42254 au 
 T_jup = 3.339 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457308.5 (2015-Oct-13.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07485772933328209 1.0269e-08  
q 2.542589538379987 3.3524e-08 au
tp 2458091.740296684926
(2017-Dec-04.24029668)
8.3807e-05 TDB
node 285.5172066543518 1.0181e-05 deg
peri 94.22203729683049 1.9585e-05 deg
i 4.027997710671448 7.2176e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2277  
   data-arc span      17885 days (48.97 yr)  
   first obs. used      1971-07-27  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45175  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:56:50  

Additional Information
 Jupiter MOID = 2.42254 au 
 T_jup = 3.339 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.054450946423859E-16 -3.289825896353609E-16 -2.088845408914252E-13 -3.114150525470716E-14 -4.584951706912227E-15 -1.422734946053537E-17
q -3.289825896353609E-16 1.12387703794063E-15 7.705430486551126E-13 8.397575879626922E-14 4.223011583040101E-14 1.455110982492739E-16
tp -2.088845408914252E-13 7.705430486551126E-13 7.023576554860797E-9 -4.494491929745683E-11 1.402700976246299E-9 4.375881730744359E-12
node -3.114150525470716E-14 8.397575879626922E-14 -4.494491929745683E-11 1.036564131442995E-10 -1.11651654316238E-10 -4.58891419898349E-12
peri -4.584951706912227E-15 4.223011583040101E-14 1.402700976246299E-9 -1.11651654316238E-10 3.835816061700718E-10 5.555083752670325E-12
i -1.422734946053537E-17 1.455110982492739E-16 4.375881730744359E-12 -4.58891419898349E-12 5.555083752670325E-12 5.209421580238285E-13

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 13.17   n/a E2021B10  
diameter diameter 12.349 km 0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.076   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13423 Bobwoolley           Discovered 1999 Nov. 13 by C. W. Juels at Fountain Hills.
Robert Woolley (b. 1953) taught astronomy and was planetarium director at Montgomery College (1976-1981) and president of the Von Braun Astronomical Society (1993-1994). Since 1994 he has been conducting week-long astronomical/geological educational experiences at a dark site near Flagstaff, Arizona.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1999 VR22 = 1971 OY = 1971 QC2 = 1985 QN4 = 1990 UC3 = 1990 WC13 = 1996 BD13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-19 17:10 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin