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3 Juno
Classification: Main-belt Asteroid          SPK-ID: 2000003
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 102 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2566013263279949 2.0177e-08  
a 2.668830767170921 2.2068e-09 au
q 1.984005252569903 5.3889e-08 au
i 12.99010228037851 2.429e-06 deg
node 169.8629971529693 1.1403e-05 deg
peri 248.2367965635273 1.2458e-05 deg
M 168.7344288303406 6.5865e-06 deg
tp 2456854.083578774720
(2014-Jul-15.58357877)
2.8648e-05 JED
period 1592.501977834551
4.36
1.9752e-06
5.408e-09
d
yr
n .2260593738725022 2.8039e-10 deg/d
Q 3.35365628177194 2.7731e-09 au
  Orbit Determination Parameters
   # obs. used (total)      6611  
   data-arc span      69075 days (189.12 yr)  
   first obs. used      1824-04-18  
   last obs. used      2013-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51434  
   data source      ORB  
   producer      Davide Farnocchia  
   solution date      2013-Jul-16 08:46:47  

Additional Information
 Earth MOID = 1.03424 au 
 Jupiter MOID = 2.19021 au 
 T_jup = 3.299 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 5.33 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 23
magnitude slope G 0.32   n/a PDS3 (MPC 17257) Fit
diameter diameter 233.92 km 11.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 23
rotation period rot_per 7.210 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Groeneveld, I.; Kuiper, G.P. (1954) Astrophys. J. 120, 529-546.]
[Chang, Y.C.; Chang, C.-s. (1962) Acta Astron. Sin. 10, 101-111.]
[Gehrels, T.; Owings, D. (1962) Astrophys. J. 135, 906-924.]
[Schroll, A.; Schober, H.J.; Lagerkvist, C.-I. (1981) Astron. Astrophys. 104, 296-299.]
[Magnusson, P. (1986) Icarus 68, 1-39.]
[Di Martino, M.; Zappala, V.; De Sanctis, G.; Cacciatori, S. (1987) Icarus 69, 338-353.]
[Lagerkvist, C.I.; Magnusson, P.; Williams, I.P.; Buontempo, M.E.; et al. (1988) Astron. Astrophys. Suppl. Ser. 73, 395-405.]
[Birch, P.V.; Taylor, R.C. (1989) Astron. Astrophys. Suppl. Ser. 81, 409-414.]
[Harris, A.W.; Young, J.W.; Bowell, E.; Martin, L.J.; et al. (1989) Icarus 77, 171-186.]
[Erikson, A.; Magnusson, P. (1993) Icarus 103, 62-66.]
[Dotto, E.; De Angelis, G.; Di Martino, M.; Barucci, M.A.; et al. (1995) Icarus 117, 313-327.]
[Kaasalainen, M.; Torppa, J.; Piironen, J. (2002) Icarus 159, 369-395.]
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Viikinkoski, M.; Kaasalainen, M.; Durecy, J.; Carry, B.; et al. (2015) Astron. Astrophys. 581, L3.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2015) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.2383   0.025 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 23
B-V BV .824 mag .024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=19; phase (min.=7.79, mean=16.60, max.=25.79) deg.
U-B UB .433 mag .030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=18; phase (min.=7.79, mean=16.62, max.=25.79) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Sk   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)

3 Juno          Discovered 1804-Sep-01 by Harding, K. at Lilienthal
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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