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 ]  
679 Pax (A909 BR)
Classification: Main-belt Asteroid          SPK-ID: 2000679
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3095020849490375 3.7601e-08  
a 2.588806477163653 9.2758e-09 au
q 1.787565474951929 9.8079e-08 au
i 24.39667450411189 4.6258e-06 deg
node 112.1256655436447 1.0851e-05 deg
peri 266.8722003000157 1.318e-05 deg
M 270.2407053068067 1.114e-05 deg
tp 2458979.836591225082
(2020-May-10.33659123)
4.8601e-05 TDB
period 1521.415395562208
4.17
8.1769e-06
2.239e-08
d
yr
n .2366217675002358 1.2717e-09 deg/d
Q 3.390047479375376 1.2147e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2639  
   data-arc span      40452 days (110.75 yr)  
   first obs. used      1909-01-29  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40754  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:55:53  

Additional Information
 Earth MOID = .962939 au 
 Jupiter MOID = 2.61001 au 
 T_jup = 3.232 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.01   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
diameter diameter 63.909 km 0.212 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.452 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Schober, H.J.; Erikson, A.; Hahn, G.; Lagerkvist, C.-I.; et al. (1994) Astron. Astrophys. Suppl. Ser. 105, 281-300.]
[Chiorny, V.G.; Shevchenko, V.G.; Krugly, Yu.N.; Velichko, F.P.; Gaftonyuk, N.M. (2003) Abstracts of Photometry and Polarimetry of Asteroids: Impact on Collaboration, Kharkiv, 9-10.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Marciniak, A.; Michalowski, T.; Polinska, M.; Bartczak, P.; et al. (2011) Astron. Astrophys. 529, A107.]
[Wang, Y.-B.; Xu, Y.; Fan, C.-B.; Liu, C.-Z. (2018). Astron. Nach. 339, 457-464.]
geometric albedo albedo 0.110   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.857   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=13.21, mean=21.87, max.=26.35) deg.
U-B UB 0.447   0.015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=13.21, mean=21.87, max.=26.35) deg.
Tholen spectral type spec_T I   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B K   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)

679 Pax (A909 BR)          Discovered 1909-Jan-28 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A909 BR = 1973 QD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin