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 ]  
22982 Emmacall (1999 VB31)
Classification: Main-belt Asteroid          SPK-ID: 2022982
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .01558195099177975 3.6084e-08  
a 2.920294107499004 1.5156e-08 au
q 2.874790227834371 1.0355e-07 au
i 2.841100505339141 3.8383e-06 deg
node 48.86690947224169 8.2356e-05 deg
peri 342.855906253495 0.00015511 deg
M 111.2976569234316 0.00013098 deg
tp 2458636.963778351289
(2019-Jun-02.46377835)
0.00066353 TDB
period 1822.797041748189
4.99
1.4191e-05
3.885e-08
d
yr
n .1974986747041979 1.5375e-09 deg/d
Q 2.965797987163637 1.5393e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1484  
   data-arc span      9074 days (24.84 yr)  
   first obs. used      1996-05-11  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5294  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:15:21  

Additional Information
 Earth MOID = 1.87719 au 
 Jupiter MOID = 2.0762 au 
 T_jup = 3.278 
[ 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 14.21   n/a E2021B10  
diameter diameter 4.203 km 0.186 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 43.532 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.275   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22982 Emmacall           Discovered 1999 Nov. 3 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Emma Call (b. 1988) is a finalist in the 2007 Intel Science Talent Search (STS), a science competition for high school seniors, for her engineering project. She attends the Baltimore Polytechnic Institute, Baltimore, Maryland.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070303/MPCPages.arcLast Updated: 2010-04-12

Alternate Designations
 1999 VB31 = 1998 QO25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-20 05:25 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin