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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05764567781929112 2.0038e-08  
a 3.102745733535411 1.6651e-08 au
q 2.923885852624849 6.5819e-08 au
i 10.7669273069784 9.1593e-07 deg
node 67.16665282262142 6.9724e-06 deg
peri 213.7992542488529 2.4811e-05 deg
M 53.04568473099286 2.7609e-05 deg
tp 2458906.352428918368
(2020-Feb-26.85242892)
0.00015344 TDB
period 1996.262770975552
5.47
1.607e-05
4.4e-08
d
yr
n .1803369802984764 1.4517e-09 deg/d
Q 3.281605614445974 1.7611e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2339  
   data-arc span      15797 days (43.25 yr)  
   first obs. used      1977-10-11  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44543  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:08:57  

Additional Information
 Earth MOID = 1.91248 au 
 Jupiter MOID = 1.7938 au 
 T_jup = 3.192 
[ 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 12.45   n/a E2021B10  
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. 2020-October); 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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