Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2289128076737257 3.9412e-08  
a 2.623062636730732 1.3385e-08 au
q 2.022610003852654 1.0523e-07 au
i 3.77848377894846 3.8698e-06 deg
node 129.1211426791638 6.4552e-05 deg
peri 252.4457732025479 6.5076e-05 deg
M 281.5691231583676 1.1755e-05 deg
tp 2459338.561713551099
(2021-May-04.06171355)
5.232e-05 TDB
period 1551.713072443862
4.25
1.1877e-05
3.252e-08
d
yr
n .2320016544250801 1.7758e-09 deg/d
Q 3.22351526960881 1.6449e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1318  
   data-arc span      16260 days (44.52 yr)  
   first obs. used      1974-11-15  
   last obs. used      2019-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55517  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:04:27  

Additional Information
 Earth MOID = 1.02934 au 
 Jupiter MOID = 2.24163 au 
 T_jup = 3.363 
[ 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 14.2   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

[ show close-approach data ]
Alternate Designations
 1991 VU4 = 1974 VD2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Apr-01 08:40 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin