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JPL Small-Body Database Browser
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126 Velleda
Classification: Main-belt Asteroid          SPK-ID: 2000126
[ 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 94 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1065161105277524 3.4618e-08  
a 2.438405201144738 5.3862e-09 au
q 2.178675763228159 8.4495e-08 au
i 2.924683944335285 3.9179e-06 deg
node 23.30920055925621 7.6858e-05 deg
peri 328.1914587591809 7.9215e-05 deg
M 201.2196972149528 2.0412e-05 deg
tp 2459213.910726274514
(2020-Dec-30.41072627)		 7.9387e-05 TDB
period 1390.776170503819
3.81		 4.6081e-06
1.262e-08		 d
yr
n .2588482659072217 8.5766e-10 deg/d
Q 2.698134639061317 5.9599e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2825  
   data-arc span      53591 days (146.72 yr)  
   first obs. used      1872-11-26  
   last obs. used      2019-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50127  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:05:19  

Additional Information
 Earth MOID = 1.17273 au 
 Jupiter MOID = 2.68556 au 
 T_jup = 3.493 
[ 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 9.27   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
diameter diameter 44.82 km 1.3 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 5.3672 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Dovgopol, A.N.; Krugly, Yu.N.; Shevchenko, V.G. (1992) Acta Astron. 42, 67-72.]
[Licchelli, D. (2006) Minor Planet Bull. 33, 11-13.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hamanowa, H.; Hamanowa, H. (2011) http://www2.ocn.ne.jp/~hamaten/astlcdata.htm]
[Pilcher, F. (2011) Minor Planet Bull. 38, 156-158.]
[Ruthroff, J.C. (2018) Minor Planet Bull. 45, 166.]
geometric albedo albedo 0.1723   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
B-V BV 0.865   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=5.29, mean=10.50, max.=17.49) deg.
U-B UB 0.496   0.042 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=5.29, mean=10.50, max.=17.49) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

126 Velleda          Discovered 1872-Nov-05 by Henry, Paul at Paris
In their cooperative program it will probably never be known which of the Henry brothers discovered which planet. With strict impartiality, these discoveries were announced as having been made alternatively by Prosper and by Paul.
Note: "planet" implies "minor planet"
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1949 YF = 1950 BD1 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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