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

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1844409731745297 4.251e-08  
a 2.72030023634439 1.3348e-08 au
q 2.218565413426127 1.1307e-07 au
i 3.592203929562092 3.9481e-06 deg
node 57.62970636992091 7.2111e-05 deg
peri 272.318412953234 7.2918e-05 deg
M 166.5883869359365 1.1082e-05 deg
tp 2458242.156605982852
(2018-May-03.65660598)
4.9135e-05 TDB
period 1638.791435991034
4.49
1.2062e-05
3.302e-08
d
yr
n .2196740793817339 1.6168e-09 deg/d
Q 3.222035059262653 1.581e-08 au
  Orbit Determination Parameters
   # obs. used (total)      860  
   data-arc span      17014 days (46.58 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57098  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:06:52  

Additional Information
 Earth MOID = 1.21126 au 
 Jupiter MOID = 2.14198 au 
 T_jup = 3.331 
[ show covariance matrix ]

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 15.2   n/a MPO365490  
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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1999-Oct-11 01:06 < 00:01 Thisb 0.0122408876451242 0.0122396303777831 0.0122421451702175 3.01089276708633 3.01089258208853 2451462.545858389 0.790735654531372 120.857406448293 32.3694517671455 -62.5776043096948 50645.3614225363 T 21 CATAB v2.0f-lin.ifort 2020-May-20 05:06:56 2020-May-20 05:07

Alternate Designations
 3326 T-2 = 1978 WA5 = 2000 SF63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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