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33749 (1999 QO)
Classification: Main-belt Asteroid          SPK-ID: 2033749
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07097508872921618 4.2796e-08  
a 2.984408059136709 1.6037e-08 au
q 2.772589432335293 1.3599e-07 au
i 7.680328383458535 4.3851e-06 deg
node 237.1674493298407 3.9178e-05 deg
peri 187.3426308828896 6.0238e-05 deg
M 315.0881786554004 4.5718e-05 deg
tp 2459435.432932630963
(2021-Aug-08.93293263)
0.00023963 TDB
period 1883.153548777564
5.16
1.5179e-05
4.156e-08
d
yr
n .1911686915990953 1.5409e-09 deg/d
Q 3.196226685938125 1.7175e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1724  
   data-arc span      8302 days (22.73 yr)  
   first obs. used      1998-05-22  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44743  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 07:45:15  

Additional Information
 Earth MOID = 1.78532 au 
 Jupiter MOID = 2.08542 au 
 T_jup = 3.241 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.62   n/a E2021B10  
rotation period rot_per 7.831 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

33749 (1999 QO)          Discovered 1999-Aug-19 by Pravec, P. at Ondrejov
Reference: 20020128/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 QO = 1998 KL39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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