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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 76 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1606282999615879 3.2545e-08  
a 2.75112814196831 8.1402e-09 au
q 2.309219105547458 8.8774e-08 au
i 8.469482967458449 3.6857e-06 deg
node 105.3350705906864 2.344e-05 deg
peri 3.925845558096976 2.6183e-05 deg
M 129.9595953179274 1.233e-05 deg
tp 2458398.813170009135
(2018-Oct-07.31317001)
5.56e-05 TDB
period 1666.727710768974
4.56
7.3974e-06
2.025e-08
d
yr
n .2159920889740938 9.5864e-10 deg/d
Q 3.193037178389162 9.4478e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2792  
   data-arc span      42098 days (115.26 yr)  
   first obs. used      1905-03-14  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39729  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:16:12  

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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