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JPL Small-Body Database Browser
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557 Violetta (A905 BD)
Classification: Main-belt Asteroid          SPK-ID: 2000557
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09930955239983159 2.952e-08  
a 2.442203368381756 6.7165e-09 au
q 2.199669244998403 7.2285e-08 au
i 2.489716068631392 3.2242e-06 deg
node 292.79187881825 9.0771e-05 deg
peri 194.8581780080871 9.3057e-05 deg
M 81.67789521981588 2.0045e-05 deg
tp 2458684.218927560528
(2019-Jul-19.71892756)
7.7636e-05 TDB
period 1394.026936808064
3.82
5.7508e-06
1.574e-08
d
yr
n .2582446511573875 1.0653e-09 deg/d
Q 2.684737491765109 7.3836e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3072  
   data-arc span      42022 days (115.05 yr)  
   first obs. used      1905-01-15  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45889  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:30:50  

Additional Information
 Earth MOID = 1.21488 au 
 Jupiter MOID = 2.35625 au 
 T_jup = 3.493 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.1   n/a MPO431497  
diameter diameter 22.621 km 0.147 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.0887 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2008) Minor Planet Bull. 35, 135-138.]
[Kaminski, L.J.; Leake, M.A.; Berget, D.J. (2010) J. SE Assoc. for Research in Astron. 3, 25-31.]
geometric albedo albedo 0.084   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

557 Violetta (A905 BD)          Discovered 1905-Jan-26 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A905 BD = 1932 EH1 = 1947 CD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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