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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 78 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1606283003818353 3.2309e-08  
a 2.751128141856293 8.0933e-09 au
q 2.30921910429728 8.8026e-08 au
i 8.469483394313439 3.6658e-06 deg
node 105.3350810251414 2.2291e-05 deg
peri 3.925835646569752 2.4939e-05 deg
M 129.9595950747502 1.2146e-05 deg
tp 2458398.813171171745
(2018-Oct-07.31317117)
5.467e-05 TDB
period 1666.727710667179
4.56
7.3548e-06
2.014e-08
d
yr
n .2159920889872856 9.5312e-10 deg/d
Q 3.193037179415306 9.3934e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2994  
   data-arc span      42215 days (115.58 yr)  
   first obs. used      1905-03-14  
   last obs. used      2020-10-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38879  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:28:16  

Additional Information
 Earth MOID = 1.32604 au 
 Jupiter MOID = 1.93617 au 
 T_jup = 3.311 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456164.5 (2012-Aug-25.0) TDB
Reference: JPL 78 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1618478300922254 3.2305e-08  
q 2.304341657588108 8.8079e-08 au
tp 2456734.706129274049
(2014-Mar-18.20612927)
5.0474e-05 TDB
node 105.3585786836161 2.2293e-05 deg
peri 4.25748406222722 2.4908e-05 deg
i 8.471060973757087 3.6676e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2994  
   data-arc span      42215 days (115.58 yr)  
   first obs. used      1905-03-14  
   last obs. used      2020-10-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38879  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:28:16  

Additional Information
 Jupiter MOID = 1.93617 au 
 T_jup = 3.311 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.043594730930344E-15 -2.837043717030596E-15 -2.230126995923425E-13 -6.265558482144431E-15 -6.122624097473384E-14 -2.579601547078212E-16
q -2.837043717030596E-15 7.757954040138801E-15 7.632315194939662E-13 1.781935275761967E-14 1.954552105879241E-13 8.041482667079034E-16
tp -2.230126995923425E-13 7.632315194939662E-13 2.54757714373513E-9 3.496906670678458E-13 5.713335538608387E-10 -4.142141471776697E-13
node -6.265558482144431E-15 1.781935275761967E-14 3.496906670678458E-13 4.969985517896675E-10 -4.909216861125937E-10 -1.999270394534052E-11
peri -6.122624097473384E-14 1.954552105879241E-13 5.713335538608387E-10 -4.909216861125937E-10 6.204158773663525E-10 1.967797072320118E-11
i -2.579601547078212E-16 8.041482667079034E-16 -4.142141471776697E-13 -1.999270394534052E-11 1.967797072320118E-11 1.345162458449008E-11

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. 2020-October); 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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