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JPL Small-Body Database Browser
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1733 Silke (1938 DL1)
Classification: Main-belt Asteroid          SPK-ID: 2001733
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08373256398265048 3.6193e-08  
a 2.192783149736929 5.2479e-09 au
q 2.009175794351504 7.9435e-08 au
i 4.430105397501074 4.9392e-06 deg
node 159.3663389647863 3.906e-05 deg
peri 306.53168753 4.7007e-05 deg
M 28.6715855741121 2.5857e-05 deg
tp 2458506.041473922590
(2019-Jan-22.54147392)
8.5165e-05 TDB
period 1186.019841838499
3.25
4.2577e-06
1.166e-08
d
yr
n .3035362371694802 1.0897e-09 deg/d
Q 2.376390505122354 5.6873e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2420  
   data-arc span      30725 days (84.12 yr)  
   first obs. used      1935-03-29  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4358  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:26:43  

Additional Information
 Earth MOID = 1.02976 au 
 Jupiter MOID = 2.7002 au 
 T_jup = 3.663 
[ 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 12.8   n/a MPO265966  
diameter diameter 6.715 km 0.090 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.89457 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.247   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1733 Silke (1938 DL1)          Discovered 1938-Feb-19 by Bohrmann, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1938 DL1 = 1935 FB = 1951 AA = 1951 AX = 1951 CE = 1951 CR = 1964 DB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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