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560 Delila (A905 EC)
Classification: Main-belt Asteroid          SPK-ID: 2000560
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 77 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1606282995469029 3.2343e-08  
a 2.751128142042418 8.1028e-09 au
q 2.309219106750514 8.8136e-08 au
i 8.469483243014885 3.6675e-06 deg
node 105.3350753950503 2.262e-05 deg
peri 3.925840534388772 2.5291e-05 deg
M 129.9595954855347 1.2195e-05 deg
tp 2458398.813169208835
(2018-Oct-07.31316921)
5.4916e-05 TDB
period 1666.72771083632
4.56
7.3634e-06
2.016e-08
d
yr
n .2159920889653664 9.5423e-10 deg/d
Q 3.193037177334322 9.4043e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2893  
   data-arc span      42146 days (115.39 yr)  
   first obs. used      1905-03-14  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39304  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:18:09  

Additional Information
 Earth MOID = 1.32604 au 
 Jupiter MOID = 1.93617 au 
 T_jup = 3.311 
[ 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 11.1   n/a MPO473769  
diameter diameter 35.334 km 0.276 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 29.913 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F.; Strabla, L.P.; Quadri, U.; Gireli, R. (2014) Minor Planet Bull. 41, 132.]
geometric albedo albedo 0.062   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B B   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)

560 Delila (A905 EC)          Discovered 1905-Mar-13 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A905 EC = 1957 OS 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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