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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06791766017414104 4.4378e-08  
a 2.432085903469783 9.0294e-09 AU
q 2.266904319563603 1.0916e-07 AU
i 4.960080395925019 5.4134e-06 deg
node 65.69614961170809 4.7573e-05 deg
peri 161.0435778541426 5.7171e-05 deg
M 80.903512484716 3.2144e-05 deg
tp 2456489.162331254975
(2013-Jul-15.66233126)
0.00012327 JED
period 1385.373234189097
3.79
7.7151e-06
2.112e-08
d
yr
n .259857770538435 1.4471e-09 deg/d
Q 2.597267487375963 9.6427e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1322  
   data-arc span      51532 days (141.09 yr)  
   first obs. used      1873-05-30  
   last obs. used      2014-07-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52342  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 11:53:42  

Additional Information
 Earth MOID = 1.25752 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. 2013-Sep-12) 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-Jul-23 06:01 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin