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JPL Small-Body Database Browser
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19910 (5078 T-3)
Classification: Main-belt Asteroid          SPK-ID: 2019910
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05822896128091899 3.6271e-08  
a 3.105765978585784 1.9978e-08 au
q 2.924920451671117 1.2015e-07 au
i 10.76992102316514 4.5629e-06 deg
node 67.21175919541547 2.3581e-05 deg
peri 214.5531624915622 5.1558e-05 deg
M 16.23919642841297 4.6005e-05 deg
tp 2458910.319310074829
(2020-Mar-01.81931007)
0.00025549 TDB
period 1999.178254673924
5.47
1.9289e-05
5.281e-08
d
yr
n .1800739874787793 1.7375e-09 deg/d
Q 3.286611505500451 2.1141e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1920  
   data-arc span      15286 days (41.85 yr)  
   first obs. used      1977-10-11  
   last obs. used      2019-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46762  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:28:52  

Additional Information
 Earth MOID = 1.9156 au 
 Jupiter MOID = 1.79245 au 
 T_jup = 3.191 
[ 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 12.4   n/a MPO449097  
diameter diameter 16.163 km 0.256 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.955 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 0.098   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19910 (5078 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
 5078 T-3 = 1997 GL39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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