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JPL Small-Body Database Browser
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19906 (4138 T-3)
Classification: Main-belt Asteroid          SPK-ID: 2019906
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .172197270275048 4.9625e-08  
a 3.147544959788624 2.0956e-08 au
q 2.605546309645037 1.5638e-07 au
i 19.1476911743825 5.6082e-06 deg
node 34.94286563602748 1.3673e-05 deg
peri 8.608641017359092 1.955e-05 deg
M 216.0093919757671 1.4448e-05 deg
tp 2459816.308085255858
(2022-Aug-24.80808526)
8.5702e-05 TDB
period 2039.653243513508
5.58
2.0369e-05
5.577e-08
d
yr
n .176500589570737 1.7626e-09 deg/d
Q 3.689543609932211 2.4564e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1135  
   data-arc span      15190 days (41.59 yr)  
   first obs. used      1977-10-07  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49123  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:47:03  

Additional Information
 Earth MOID = 1.61519 au 
 Jupiter MOID = 1.7576 au 
 T_jup = 3.101 
[ 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 13.5   n/a MPO384925  
diameter diameter 11.724 km 0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 25.958 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.047   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19906 (4138 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

[ show close-approach data ]
Alternate Designations
 4138 T-3 = 1997 HS16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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