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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2289128037192849 3.7957e-08  
a 2.623062635377969 1.2947e-08 au
q 2.022610013182302 1.0216e-07 au
i 3.77848427828723 3.7936e-06 deg
node 129.1211547782121 6.1929e-05 deg
peri 252.4457609107369 6.2472e-05 deg
M 281.5691241093897 1.1544e-05 deg
tp 2459338.561709190377
(2021-May-04.06170919)
5.1313e-05 TDB
period 1551.71307124349
4.25
1.1489e-05
3.146e-08
d
yr
n .2320016546045516 1.7177e-09 deg/d
Q 3.223515257573636 1.5911e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1362  
   data-arc span      16651 days (45.59 yr)  
   first obs. used      1974-11-15  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55021  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:16:36  

Additional Information
 Earth MOID = 1.02934 au 
 Jupiter MOID = 2.24163 au 
 T_jup = 3.363 
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Orbital Elements at Epoch 2456845.5 (2014-Jul-07.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2304007940504997 3.7819e-08  
q 2.016214246791595 1.0164e-07 au
tp 2456241.676988531434
(2012-Nov-10.17698853)
4.0998e-05 TDB
node 129.1760572134441 6.2026e-05 deg
peri 252.8392389598469 6.2565e-05 deg
i 3.777329903895528 3.7927e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1362  
   data-arc span      16651 days (45.59 yr)  
   first obs. used      1974-11-15  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55021  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:16:36  

Additional Information
 Jupiter MOID = 2.24163 au 
 T_jup = 3.363 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.430313610064376E-15 -3.826277455185294E-15 -2.959516484693447E-13 2.053583007289615E-15 -8.124031775084242E-14 7.675707299223795E-16
q -3.826277455185294E-15 1.03297464758318E-14 8.596585970972883E-13 -5.20606562603307E-15 2.37908683637302E-13 -1.899380077117638E-15
tp -2.959516484693447E-13 8.596585970972883E-13 1.680853055489939E-9 -4.467577867548106E-12 3.587888592200386E-10 2.558663377878064E-13
node 2.053583007289615E-15 -5.20606562603307E-15 -4.467577867548106E-12 3.847256587751524E-9 -3.839324500162699E-9 5.554103746198722E-11
peri -8.124031775084242E-14 2.37908683637302E-13 3.587888592200386E-10 -3.839324500162699E-9 3.914386875573199E-9 -5.536774597026762E-11
i 7.675707299223795E-16 -1.899380077117638E-15 2.558663377878064E-13 5.554103746198722E-11 -5.536774597026762E-11 1.438493182280761E-11

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 14.2   n/a MPO435808  
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. 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 0.060   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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