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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2289128029183424 3.7466e-08  
a 2.623062635038131 1.2787e-08 au
q 2.022610015021179 1.0114e-07 au
i 3.778484357702564 3.7731e-06 deg
node 129.121153370947 6.0857e-05 deg
peri 252.4457622322344 6.1411e-05 deg
M 281.5691243628095 1.1457e-05 deg
tp 2459338.561708032361
(2021-May-04.06170803)
5.0902e-05 TDB
period 1551.713070941935
4.25
1.1347e-05
3.107e-08
d
yr
n .232001654649638 1.6965e-09 deg/d
Q 3.223515255055083 1.5715e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1406  
   data-arc span      16802 days (46.00 yr)  
   first obs. used      1974-11-15  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5432  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 20:16:31  

Additional Information
 Earth MOID = 1.02934 au 
 Jupiter MOID = 2.24163 au 
 T_jup = 3.363 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456876.5 (2014-Aug-07.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2304192433770818 3.733e-08  
q 2.016113756137654 1.0061e-07 au
tp 2456241.664106818172
(2012-Nov-10.16410682)
4.089e-05 TDB
node 129.1761509076945 6.0954e-05 deg
peri 252.832550503474 6.1503e-05 deg
i 3.777335827993321 3.7722e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1406  
   data-arc span      16802 days (46.00 yr)  
   first obs. used      1974-11-15  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5432  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 20:16:31  

Additional Information
 Jupiter MOID = 2.24163 au 
 T_jup = 3.363 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.393512128597714E-15 -3.738963608461601E-15 -3.123998645134324E-13 1.779884858929497E-15 -8.271402191909967E-14 7.127815223550578E-16
q -3.738963608461601E-15 1.012234769019909E-14 8.984955222801935E-13 -4.394823089374156E-15 2.412447856736082E-13 -1.76354880309533E-15
tp -3.123998645134324E-13 8.984955222801935E-13 1.672000847217948E-9 -3.746475642213059E-12 3.569802902457013E-10 2.684370508484985E-13
node 1.779884858929497E-15 -4.394823089374156E-15 -3.746475642213059E-12 3.715362690195679E-9 -3.707572838997903E-9 5.117657340092863E-11
peri -8.271402191909967E-14 2.412447856736082E-13 3.569802902457013E-10 -3.707572838997903E-9 3.782638512067819E-9 -5.100841035092652E-11
i 7.127815223550578E-16 -1.76354880309533E-15 2.684370508484985E-13 5.117657340092863E-11 -5.100841035092652E-11 1.422969931709791E-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. 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

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