Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
131 Vala
Classification: Main-belt Asteroid          SPK-ID: 2000131
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06801226911701835 4.4208e-08  
a 2.431781624323177 9.0252e-09 AU
q 2.266390638055888 1.087e-07 AU
i 4.9601158881196 5.3874e-06 deg
node 65.69156811838656 4.7575e-05 deg
peri 160.9623783324812 5.7144e-05 deg
M 132.9597160382563 3.2183e-05 deg
tp 2456488.932596854602
(2013-Jul-15.43259685)
0.0001231 JED
period 1385.113255501795
3.79
7.7109e-06
2.111e-08
d
yr
n .2599065445154377 1.4469e-09 deg/d
Q 2.597172610590465 9.639e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1325  
   data-arc span      51563 days (141.17 yr)  
   first obs. used      1873-05-30  
   last obs. used      2014-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52292  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 13:51:23  

Additional Information
 Earth MOID = 1.25844 AU 
 T_jup = 3.499 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.03 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
diameter diameter 40.44 km 1.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
rotation period rot_per 5.1812 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Pilcher, F. (2009) Minor Planet Bul. 36, 100-102.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Galad, A.; Kornos, L.; Vilagi, J. (2010) Minor Planet Bul. 37, 9-15.]
geometric albedo albedo 0.1051   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
B-V BV .829 mag .034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=12.78 deg.
U-B UB .402 mag .053 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=12.78 deg.
Tholen spectral type spec_T SU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Xc   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

131 Vala          Discovered 1873-May-24 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1945 KA = 1952 DS3 = 1953 QE 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Sep-01 18:39 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin