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 ]  
19439 Allisontjong (1998 FB91)
Classification: Main-belt Asteroid          SPK-ID: 2019439
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05790554754789039 5.0212e-08  
a 2.592601807214638 1.2933e-08 au
q 2.442475779994224 1.2886e-07 au
i 7.264331271517722 5.0565e-06 deg
node 56.36924607389465 3.6855e-05 deg
peri 139.0496799059623 5.2448e-05 deg
M 96.50032056073356 3.632e-05 deg
tp 2458591.777626901296
(2019-Apr-18.27762690)
0.00015382 TDB
period 1524.762337166839
4.17
1.141e-05
3.124e-08
d
yr
n .2361023690215984 1.7667e-09 deg/d
Q 2.742727834435052 1.3682e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1196  
   data-arc span      9162 days (25.08 yr)  
   first obs. used      1994-04-10  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5349  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:43:17  

Additional Information
 Earth MOID = 1.44433 au 
 Jupiter MOID = 2.22274 au 
 T_jup = 3.405 
[ 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 14.3   n/a MPO384921  
diameter diameter 6.895 km 0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19439 Allisontjong           Discovered 1998 Mar. 24 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Allison Krystle Weili Tjong (b. 1986) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for her environmental science team project. She attends the Lake Brantley High School, Altamonte Springs, Florida, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040830/MPCPages.arcLast Updated: 2004-09-06

Alternate Designations
 1998 FB91 = 2000 SV274 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-25 12:11 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin