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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1948064101242895 1.633e-08  
a 2.416045895930367 5.9508e-09 au
q 1.945384668248649 3.9213e-08 au
i 13.35470836774761 7.8291e-07 deg
node 176.8905937914207 2.7702e-06 deg
peri 302.2596463653709 4.7077e-06 deg
M 295.4930716526983 4.6613e-06 deg
tp 2459642.287650717710
(2022-Mar-03.78765072)
1.8377e-05 TDB
period 1371.690708662877
3.76
5.0678e-06
1.387e-08
d
yr
n .2624498348836435 9.6963e-10 deg/d
Q 2.886707123612084 7.1101e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3081  
   data-arc span      41147 days (112.65 yr)  
   first obs. used      1908-11-29  
   last obs. used      2021-07-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41131  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:10:45  

Additional Information
 Earth MOID = .994484 au 
 Jupiter MOID = 2.26731 au 
 T_jup = 3.454 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457061.5 (2015-Feb-08.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1944001236092893 1.6249e-08  
q 1.947116516218433 3.8979e-08 au
tp 2456894.580102605227
(2014-Aug-25.08010261)
1.3454e-05 TDB
node 177.0727126967076 2.7721e-06 deg
peri 301.5379677323199 4.7291e-06 deg
i 13.34188521566448 7.8219e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3081  
   data-arc span      41147 days (112.65 yr)  
   first obs. used      1908-11-29  
   last obs. used      2021-07-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41131  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:10:45  

Additional Information
 Jupiter MOID = 2.26731 au 
 T_jup = 3.454 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.640209610940804E-16 -6.285745872082211E-16 1.260300091463017E-13 -1.108420631521036E-14 2.45144290446135E-14 3.53106085762257E-16
q -6.285745872082211E-16 1.519339525920489E-15 -2.916162208638679E-13 2.630603925168646E-14 -5.477679867953733E-14 -8.285597036214995E-16
tp 1.260300091463017E-13 -2.916162208638679E-13 1.810012402713173E-10 -1.120117277877576E-11 5.183265127739126E-11 -2.106835478847792E-12
node -1.108420631521036E-14 2.630603925168646E-14 -1.120117277877576E-11 7.684706536476869E-12 -9.572831461387256E-12 -3.123116589121813E-13
peri 2.45144290446135E-14 -5.477679867953733E-14 5.183265127739126E-11 -9.572831461387256E-12 2.236414694871967E-11 -3.096049187253372E-13
i 3.53106085762257E-16 -8.285597036214995E-16 -2.106835478847792E-12 -3.123116589121813E-13 -3.096049187253372E-13 6.118174081858373E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.71   n/a E2021B10  
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. 2020-October); 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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