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19187 (1991 VU2)
Classification: Main-belt Asteroid          SPK-ID: 2019187
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 .202623342871047 4.5639e-08  
a 2.674308984000989 1.3858e-08 au
q 2.132431557792635 1.2542e-07 au
i 12.49303100844375 4.0323e-06 deg
node 79.04027460442538 2.0847e-05 deg
peri 296.7263761220758 2.2358e-05 deg
M 254.0099175198601 9.8372e-06 deg
tp 2459670.803846940080
(2022-Apr-01.30384694)
4.5499e-05 TDB
period 1597.407803981599
4.37
1.2416e-05
3.399e-08
d
yr
n .2253651191027654 1.7517e-09 deg/d
Q 3.216186410209343 1.6665e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1637  
   data-arc span      10455 days (28.62 yr)  
   first obs. used      1991-11-04  
   last obs. used      2020-06-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49133  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:48:31  

Additional Information
 Earth MOID = 1.16724 au 
 Jupiter MOID = 2.33395 au 
 T_jup = 3.317 
[ 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 13.99   n/a E2021B10  
diameter diameter 8.383 km 0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.82416 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.083   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19187 (1991 VU2)          Discovered 1991-Nov-04 by Otomo, S. at Kiyosato
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 VU2 = 1998 HO104 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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