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379162 (2009 QY21)
Classification: Main-belt Asteroid          SPK-ID: 2379162
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2920032829218157 5.199e-08  
a 2.414239330416895 1.2978e-08 au
q 1.709273520176195 1.2825e-07 au
i 2.498030470426157 7.3613e-06 deg
node 97.16958961145689 0.00012555 deg
peri 208.5534698124317 0.00012653 deg
M 329.1912502938159 1.2783e-05 deg
tp 2459117.757459673314
(2020-Sep-25.25745967)
4.8743e-05 TDB
period 1370.152501642089
3.75
1.1048e-05
3.025e-08
d
yr
n .2627444752088182 2.1186e-09 deg/d
Q 3.119205140657594 1.6767e-08 au
  Orbit Determination Parameters
   # obs. used (total)      137  
   data-arc span      7498 days (20.53 yr)  
   first obs. used      2000-02-05  
   last obs. used      2020-08-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53824  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:06:24  

Additional Information
 Earth MOID = .694756 au 
 Jupiter MOID = 2.14952 au 
 T_jup = 3.457 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458026.5 (2017-Sep-30.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2912918839085666 5.1975e-08  
q 1.711353751112795 1.2818e-07 au
tp 2457747.699498911968
(2016-Dec-25.19949891)
4.9172e-05 TDB
node 97.16917719345861 0.00012555 deg
peri 208.5840444374172 0.00012654 deg
i 2.497775693878954 7.3605e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      137  
   data-arc span      7498 days (20.53 yr)  
   first obs. used      2000-02-05  
   last obs. used      2020-08-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53824  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:06:24  

Additional Information
 Jupiter MOID = 2.14952 au 
 T_jup = 3.457 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.701372775911555E-15 -6.646059858900976E-15 -1.072450611251887E-12 4.736951462631681E-14 -2.650947002011675E-13 -2.770873366687569E-15
q -6.646059858900976E-15 1.643054693073454E-14 2.531181296608234E-12 -1.20586115620885E-13 6.273790386145364E-13 7.017184065403685E-15
tp -1.072450611251887E-12 2.531181296608234E-12 2.417839852152753E-9 -3.840303555346967E-11 7.941996183247328E-10 3.512046636849592E-12
node 4.736951462631681E-14 -1.20586115620885E-13 -3.840303555346967E-11 1.576319333306051E-8 -1.575823050528271E-8 -4.291249489422685E-10
peri -2.650947002011675E-13 6.273790386145364E-13 7.941996183247328E-10 -1.575823050528271E-8 1.601234453502367E-8 4.297957559308234E-10
i -2.770873366687569E-15 7.017184065403685E-15 3.512046636849592E-12 -4.291249489422685E-10 4.297957559308234E-10 5.417667867035323E-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 17.8   n/a MPO434345  

379162 (2009 QY21)          Discovered 2005-Jun-16 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2013-11-20
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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