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120502 (1993 QD9)
Classification: Main-belt Asteroid          SPK-ID: 2120502
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1891471346258531 6.0681e-08  
a 2.448383384853093 1.1329e-08 au
q 1.985278683142583 1.4831e-07 au
i 4.666275752665283 6.4366e-06 deg
node 357.9027034560949 5.0511e-05 deg
peri 22.26207215690467 5.2109e-05 deg
M 329.4766412914509 1.0083e-05 deg
tp 2459119.144437613034
(2020-Sep-26.64443761)
3.9045e-05 TDB
period 1399.321678473394
3.83
9.7119e-06
2.659e-08
d
yr
n .2572675072058815 1.7855e-09 deg/d
Q 2.911488086563602 1.3471e-08 au
  Orbit Determination Parameters
   # obs. used (total)      526  
   data-arc span      10872 days (29.77 yr)  
   first obs. used      1991-02-08  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56603  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:46:49  

Additional Information
 Earth MOID = .988469 au 
 Jupiter MOID = 2.55777 au 
 T_jup = 3.468 
[ 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 16.5   n/a MPO436582  

120502 (1993 QD9)          Discovered 1993-Aug-20 by Elst, E. W. at La Silla
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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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
2125-Apr-27 14:15 00:02 Hebe 0.029948125922392 0.0299264854627292 0.029969768449538 5.53711390936582 5.53711387187677 2497317.094001965 2.38538520371826 1148.07150316586 51.3333080058959 20.0228320791156 30095.3375172838 T 15 CATAB v2.0f-lin.ifort 2020-Dec-17 22:46:50 2020-Dec-17 22:46
2130-Mar-12 04:24 00:07 Iris 0.0472840822038826 0.0472812884515291 0.0472868823026813 2.76902137890735 2.76902133500055 2499096.683272656 7.37673501745574 1025.25564346473 73.4956407046905 -83.3443015589674 95491.332213171 T 15 CATAB v2.0f-lin.ifort 2020-Dec-17 22:46:50 2020-Dec-17 22:46

Alternate Designations
 1993 QD9 = 2001 VS14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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