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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457147.5 (2015-May-05.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1858330429099009 4.3022e-08  
q 2.21380694231881 1.1469e-07 au
tp 2456598.321269452302
(2013-Nov-01.82126945)
4.7069e-05 TDB
node 57.80412878068776 7.2285e-05 deg
peri 271.2817567068438 7.3051e-05 deg
i 3.590276702496283 3.9427e-06 deg
  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
 Jupiter MOID = 2.14198 au 
 T_jup = 3.331 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.850857998840353E-15 -4.914167952722495E-15 6.165753490625031E-14 -6.792084979425284E-15 -2.001275560549967E-14 -5.173419959164241E-16
q -4.914167952722495E-15 1.315439073972611E-14 -1.790268298034082E-13 1.829518292105783E-14 5.760695679664134E-14 1.522027254740502E-15
tp 6.165753490625031E-14 -1.790268298034082E-13 2.215516267287208E-9 -1.499715186473597E-11 5.197425702208245E-10 -5.035330680212072E-13
node -6.792084979425284E-15 1.829518292105783E-14 -1.499715186473597E-11 5.225186819808201E-9 -5.21796268478085E-9 3.853146396491074E-12
peri -2.001275560549967E-14 5.760695679664134E-14 5.197425702208245E-10 -5.21796268478085E-9 5.336401422817343E-9 -3.954673401527771E-12
i -5.173419959164241E-16 1.522027254740502E-15 -5.035330680212072E-13 3.853146396491074E-12 -3.954673401527771E-12 1.554494951593679E-11

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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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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