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865 Zubaida (A917 CH)
Classification: Main-belt Asteroid          SPK-ID: 2000865
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1936559344275983 2.9761e-08  
a 2.417665750188542 6.7125e-09 au
q 1.949470430202179 7.1255e-08 au
i 13.33942542868957 4.2898e-06 deg
node 177.0584446794063 1.7634e-05 deg
peri 301.6229038112792 2.1814e-05 deg
M 87.36039470318941 1.369e-05 deg
tp 2458267.300070517375
(2018-May-28.80007052)
5.1911e-05 TDB
period 1373.070428782825
3.76
5.7184e-06
1.566e-08
d
yr
n .262186114021206 1.0919e-09 deg/d
Q 2.885861070174904 8.0124e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2372  
   data-arc span      40502 days (110.89 yr)  
   first obs. used      1908-11-29  
   last obs. used      2019-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45029  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:58:32  

Additional Information
 Earth MOID = .998891 au 
 Jupiter MOID = 2.27279 au 
 T_jup = 3.454 
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Orbital Elements at Epoch 2456201.5 (2012-Oct-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1939656860123684 2.9757e-08  
q 1.948386478518434 7.129e-08 au
tp 2455522.257424073243
(2010-Nov-21.75742407)
5.0661e-05 TDB
node 177.0969467442642 1.7641e-05 deg
peri 301.5963676105273 2.1817e-05 deg
i 13.33723644735485 4.2896e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2372  
   data-arc span      40502 days (110.89 yr)  
   first obs. used      1908-11-29  
   last obs. used      2019-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45029  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:58:32  

Additional Information
 Jupiter MOID = 2.27279 au 
 T_jup = 3.454 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.854575300001614E-16 -2.115256205883005E-15 -9.132554913958359E-14 4.469553550183997E-15 -4.564173882200281E-14 1.366669064851838E-15
q -2.115256205883005E-15 5.082295574466256E-15 2.153213811625234E-13 -1.078356181271275E-14 1.114062345365101E-13 -3.204814078639755E-15
tp -9.132554913958359E-14 2.153213811625234E-13 2.566496722029109E-9 6.491045762563153E-13 6.679728406889862E-10 -9.118195909632415E-13
node 4.469553550183997E-15 -1.078356181271275E-14 6.491045762563153E-13 3.112212543830516E-10 -3.020836807681118E-10 2.802057445168508E-11
peri -4.564173882200281E-14 1.114062345365101E-13 6.679728406889862E-10 -3.020836807681118E-10 4.759698833299986E-10 -2.755372012769049E-11
i 1.366669064851838E-15 -3.204814078639755E-15 -9.118195909632415E-13 2.802057445168508E-11 -2.755372012769049E-11 1.840072034989272E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.7   n/a MPO337250  
diameter diameter 17.77 km 1.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 4
rotation period rot_per 11.3533 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Bembrick, C.; Crawford, G.; Bolt, G.; Allen, B. (2007) Minor Planet Bull. 34, 84.]
[Higgins, D.; Oey, J. (2007) Minor Planet Bull. 34, 79-80.]
geometric albedo albedo 0.0972   0.014 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 4

865 Zubaida (A917 CH)          Discovered 1917-Feb-15 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A917 CH = 1936 FK1 = 1970 GQ1 = A908 WF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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