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JPL Small-Body Database Browser
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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3090877282412279 3.7146e-08  
a 2.586993675689123 8.9765e-09 au
q 1.787385677495948 9.6931e-08 au
i 24.40703857764901 4.5934e-06 deg
node 112.11689420076 1.0733e-05 deg
peri 266.9736033932306 1.3101e-05 deg
M 4.827132284432288 1.1508e-05 deg
tp 2458980.121220174655
(2020-May-10.62122017)
4.8503e-05 TDB
period 1519.817627700905
4.16
7.9103e-06
2.166e-08
d
yr
n .2368705254094123 1.2329e-09 deg/d
Q 3.386601673882297 1.1751e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2716  
   data-arc span      40462 days (110.78 yr)  
   first obs. used      1909-01-29  
   last obs. used      2019-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40279  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:33:52  

Additional Information
 Earth MOID = .963711 au 
 Jupiter MOID = 2.61678 au 
 T_jup = 3.233 
[ 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 9.1   n/a MPO492757 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-August); 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 ]
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