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3362 Khufu (1984 QA)
Classification: Aten [NEO, PHA]          SPK-ID: 2003362
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4684979986874707 5.7217e-07  
a .989521052449183 1.2527e-08 au
q .5259324197176211 5.7275e-07 au
i 9.91725123170372 1.1902e-05 deg
node 152.4319371191656 5.8408e-05 deg
peri 55.04828263459201 4.7843e-05 deg
M 234.3405287833117 0.00018665 deg
tp 2459521.995661346245
(2021-Nov-03.49566135)
0.00018876 TDB
period 359.5307034735334
0.98
6.8275e-06
1.869e-08
d
yr
n 1.001305303057382 1.9015e-08 deg/d
Q 1.453109685180745 1.8396e-08 au
  Orbit Determination Parameters
   # obs. used (total)      262  
   data-arc span      7394 days (20.24 yr)  
   first obs. used      1984-08-30  
   last obs. used      2004-11-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .6347  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:01:37  

Additional Information
 Earth MOID = .0133296 au 
 Jupiter MOID = 3.51847 au 
 T_jup = 6.017 
[ hide covariance matrix ]
Orbital Elements at Epoch 2450632.5 (1997-Jul-03.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .468543789793597 5.7124e-07  
q .5258696232911585 5.741e-07 au
tp 2450533.892521953355
(1997-Mar-26.39252195)
2.8045e-05 TDB
node 152.6478158541972 5.8022e-05 deg
peri 54.85818780295242 4.7819e-05 deg
i 9.913097765160121 1.1992e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      262  
   data-arc span      7394 days (20.24 yr)  
   first obs. used      1984-08-30  
   last obs. used      2004-11-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .6347  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:01:37  

Additional Information
 Jupiter MOID = 3.51847 au 
 T_jup = 6.017 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.263124373106122E-13 -3.279445242154815E-13 7.686753041149396E-12 1.654913300712414E-11 4.036064486657074E-14 5.25423693407217E-12
q -3.279445242154815E-13 3.295862072197205E-13 -7.740111367970009E-12 -1.664326472340723E-11 -3.952471013136824E-14 -5.281891836687161E-12
tp 7.686753041149396E-12 -7.740111367970009E-12 7.865330386708404E-10 7.402959149988855E-10 2.309603335865572E-11 1.91183560487914E-10
node 1.654913300712414E-11 -1.664326472340723E-11 7.402959149988855E-10 3.366590179662469E-9 -2.275812953004035E-9 3.850960344763408E-10
peri 4.036064486657074E-14 -3.952471013136824E-14 2.309603335865572E-11 -2.275812953004035E-9 2.286648669727746E-9 -7.478947123203804E-11
i 5.25423693407217E-12 -5.281891836687161E-12 1.91183560487914E-10 3.850960344763408E-10 -7.478947123203804E-11 1.438027151301847E-10

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 18.3   n/a PDS3 (MPC 28110)  
diameter diameter 0.7 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543  
geometric albedo albedo 0.21   n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543  

3362 Khufu (1984 QA)          Discovered 1984-Aug-30 by Dunbar, R. S. and Barucci, M. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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