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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2283925362219658 3.7505e-08  
a 2.622108793342226 1.3028e-08 au
q 2.023238715780877 1.0107e-07 au
i 3.779663680395378 3.7746e-06 deg
node 129.1171843517043 6.0815e-05 deg
peri 252.4619904849872 6.1371e-05 deg
M 327.9182579432417 1.167e-05 deg
tp 2459338.706964732837
(2021-May-04.20696473)
5.0918e-05 TDB
period 1550.866758288777
4.25
1.1558e-05
3.164e-08
d
yr
n .2321282586501649 1.73e-09 deg/d
Q 3.220978870903576 1.6003e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1411  
   data-arc span      16839 days (46.10 yr)  
   first obs. used      1974-11-15  
   last obs. used      2020-12-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54302  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:01:06  

Additional Information
 Earth MOID = 1.02865 au 
 Jupiter MOID = 2.24531 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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