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19902 (3420 T-3)
Classification: Main-belt Asteroid          SPK-ID: 2019902
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .135553227291659 2.6646e-08  
a 2.445317302401211 7.6396e-09 au
q 2.113846650308593 6.6019e-08 au
i 2.343233721072958 3.8155e-06 deg
node 145.041692296228 7.8809e-05 deg
peri 318.29041722 8.0365e-05 deg
M 33.7064077569297 1.4913e-05 deg
tp 2459069.729065393824
(2020-Aug-08.22906539)
5.7798e-05 TDB
period 1396.693969814827
3.82
6.5453e-06
1.792e-08
d
yr
n .2577515245145137 1.2079e-09 deg/d
Q 2.776787954493829 8.6752e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1480  
   data-arc span      15874 days (43.46 yr)  
   first obs. used      1977-10-07  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .522  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:00:27  

Additional Information
 Earth MOID = 1.13123 au 
 Jupiter MOID = 2.34843 au 
 T_jup = 3.485 
[ 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 15.13   n/a MPCxxxxx  
diameter diameter 2.451 km 0.358 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.32 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
geometric albedo albedo 0.245   0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

19902 (3420 T-3)          Discovered 1977-Oct-16 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 3420 T-3 = 1996 TV38 = 2000 SY115 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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