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11527 (1991 VU4)
Classification: Main-belt Asteroid          SPK-ID: 2011527
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2281490574064705 3.7512e-08  
a 2.621241579044288 1.2727e-08 au
q 2.023207783550685 1.0102e-07 au
i 3.779721775274138 3.7112e-06 deg
node 129.1178087271443 6.0819e-05 deg
peri 252.4930658133277 6.1365e-05 deg
M 13.40102406701315 1.1876e-05 deg
tp 2459338.797519134643
(2021-May-04.29751913)
5.0874e-05 TDB
period 1550.097440885986
4.24
1.1289e-05
3.091e-08
d
yr
n .2322434645103572 1.6914e-09 deg/d
Q 3.21927537453789 1.563e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1419  
   data-arc span      16839 days (46.10 yr)  
   first obs. used      1974-11-15  
   last obs. used      2020-12-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54212  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:49:19  

Additional Information
 Earth MOID = 1.0292 au 
 Jupiter MOID = 2.24793 au 
 T_jup = 3.364 
[ 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 14.27   n/a E2021B10  
diameter diameter 7.304 km 1.788 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
rotation period rot_per 4.094 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 0.060   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

11527 (1991 VU4)          Discovered 1991-Nov-05 by Otomo, S. at Kiyosato
Reference: 19990928/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1991 VU4 = 1974 VD2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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