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 ]  
19891 (3326 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2019891
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1846097946422284 3.9995e-08  
a 2.719885700588451 1.2797e-08 au
q 2.217768159952484 1.0712e-07 au
i 3.592280009360283 3.7917e-06 deg
node 57.62113767867566 7.0412e-05 deg
peri 272.3608402694713 7.1153e-05 deg
M 210.4823394363763 1.1095e-05 deg
tp 2459880.978487412412
(2022-Oct-28.47848741)
5.2419e-05 TDB
period 1638.416856878431
4.49
1.1563e-05
3.166e-08
d
yr
n .2197243018396946 1.5507e-09 deg/d
Q 3.222003241224419 1.516e-08 au
  Orbit Determination Parameters
   # obs. used (total)      890  
   data-arc span      17351 days (47.50 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57016  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:00:26  

Additional Information
 Earth MOID = 1.20855 au 
 Jupiter MOID = 2.14226 au 
 T_jup = 3.331 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457325.5 (2015-Oct-30.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1852990876884072 4.0351e-08  
q 2.216594746548324 1.0826e-07 au
tp 2456598.412590428143
(2013-Nov-01.91259043)
4.6115e-05 TDB
node 57.77278761227045 7.0586e-05 deg
peri 271.4481231515737 7.1299e-05 deg
i 3.589359472553709 3.785e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      890  
   data-arc span      17351 days (47.50 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57016  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:00:26  

Additional Information
 Jupiter MOID = 2.14226 au 
 T_jup = 3.331 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.628187566902921E-15 -4.3489499877823E-15 1.98457073775606E-13 -4.48577620068958E-15 2.167489965284683E-14 -3.083302494239492E-16
q -4.3489499877823E-15 1.171970268663567E-14 -5.171957884596238E-13 1.253154959749687E-14 -4.570158896586889E-14 8.489703617426243E-16
tp 1.98457073775606E-13 -5.171957884596238E-13 2.126566221588713E-9 -1.149030415942944E-11 4.870410110668691E-10 -3.080322007204587E-13
node -4.48577620068958E-15 1.253154959749687E-14 -1.149030415942944E-11 4.982426615456752E-9 -4.974885041874241E-9 -1.124780021209879E-11
peri 2.167489965284683E-14 -4.570158896586889E-14 4.870410110668691E-10 -4.974885041874241E-9 5.083561241571576E-9 1.115264925261155E-11
i -3.083302494239492E-16 8.489703617426243E-16 -3.080322007204587E-13 -1.124780021209879E-11 1.115264925261155E-11 1.432594567083757E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.24   n/a E2021B10  
diameter diameter 3.910 km 0.488 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.073   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19891 (3326 T-2)          Discovered 1973-Sep-25 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 3326 T-2 = 1978 WA5 = 2000 SF63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-15 17:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin