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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.


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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456071.5 (2012-May-24.0) TDB
Reference: JPL 77 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .161767701908155 3.2335e-08  
q 2.304675744331985 8.8173e-08 au
tp 2456734.779065750653
(2014-Mar-18.27906575)
5.0806e-05 TDB
node 105.357484720551 2.2623e-05 deg
peri 4.258091589634016 2.5262e-05 deg
i 8.470869802745183 3.6693e-06 deg
  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
 Jupiter MOID = 1.93617 au 
 T_jup = 3.311 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.045558310154482E-15 -2.842707214151183E-15 -2.15151766885457E-13 -6.086264688640148E-15 -5.898804715646467E-14 -2.606693013974861E-16
q -2.842707214151183E-15 7.774427081508011E-15 7.386394694577724E-13 1.731591777186805E-14 1.883991726202064E-13 8.18064588576901E-16
tp -2.15151766885457E-13 7.386394694577724E-13 2.581216605334992E-9 -2.299330029913192E-13 5.819334371211246E-10 -4.52400115076255E-13
node -6.086264688640148E-15 1.731591777186805E-14 -2.299330029913192E-13 5.117985853403201E-10 -5.056938031490409E-10 -1.95918334202277E-11
peri -5.898804715646467E-14 1.883991726202064E-13 5.819334371211246E-10 -5.056938031490409E-10 6.381734484153704E-10 1.927104672099996E-11
i -2.606693013974861E-16 8.18064588576901E-16 -4.52400115076255E-13 -1.95918334202277E-11 1.927104672099996E-11 1.346362582346803E-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. 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1902-Nov-20 00:37 00:01 Jupiter 1.96462420633295 1.96462371234301 1.96462470032456 2.72013312884207 2.55672640369089 2416073.525394172 1.42625840816279 106.625847595707 7.01790444194408 80.7503536441677 4038253.83262992 T 77 CATAB v2.0f-lin.ifort 2020-Aug-24 22:18:24 2020-Aug-24 22:18
1962-Mar-30 20:38 < 00:01 Jupiter 1.96612406424318 1.96612368930415 1.96612443918255 2.70029898299307 2.5357440817854 2437754.359496120 0.672272250834661 58.6364857900755 6.49171006319754 77.9791739944226 3950428.03551845 T 77 CATAB v2.0f-lin.ifort 2020-Aug-24 22:18:24 2020-Aug-24 22:18
2021-Aug-09 08:50 < 00:01 Jupiter 1.96776884525126 1.96776855731649 1.96776913318614 2.67987775167217 2.5141297512728 2459435.868341120 0.191319585336405 36.3408042903539 7.24088494527128 76.9835593654649 3941617.20342945 T 77 CATAB v2.0f-lin.ifort 2020-Aug-24 22:18:24 2020-Aug-24 22:18
2080-Dec-19 16:40 < 00:01 Jupiter 1.96948658056692 1.96948629251503 1.96948686861903 2.65886085649218 2.49186587682333 2481118.194782214 0.898689891013689 69.4967301468261 7.90103226935239 82.6210409384933 4136664.47738344 T 77 CATAB v2.0f-lin.ifort 2020-Aug-24 22:18:24 2020-Aug-24 22:18
2140-May-02 23:36 00:02 Jupiter 1.97147079000394 1.97147039578932 1.97147118422014 2.63805227877794 2.46982590940879 2502801.483037393 1.67051442520466 117.38156813537 7.6793383422056 82.7800712069732 4134351.83451679 T 77 CATAB v2.0f-lin.ifort 2020-Aug-24 22:18:24 2020-Aug-24 22:18
2199-Sep-15 07:39 00:02 Jupiter 1.97388469257672 1.97388412769278 1.97388525746491 2.6181152802473 2.44873409093895 2524485.818420768 2.45300863000215 167.192001440735 7.50474686841003 82.5357905483897 4110993.34231394 T 77 CATAB v2.0f-lin.ifort 2020-Aug-24 22:18:24 2020-Aug-24 22:18

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