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JPL Small-Body Database Browser
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109444 (2001 QG201)
Classification: Main-belt Asteroid          SPK-ID: 2109444
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09995673281232098 4.5518e-08  
a 3.117386073449488 3.1541e-08 au
q 2.805782346632848 1.4045e-07 au
i 4.182987865119101 5.1786e-06 deg
node 251.9103232114708 7.4136e-05 deg
peri 2.749374136380932 7.9007e-05 deg
M 161.4906505073304 2.7069e-05 deg
tp 2457698.660617941710
(2016-Nov-06.16061794)
0.00015161 TDB
period 2010.408506752825
5.50
3.0511e-05
8.353e-08
d
yr
n .1790680843175825 2.7176e-09 deg/d
Q 3.428989800266129 3.4694e-08 au
  Orbit Determination Parameters
   # obs. used (total)      477  
   data-arc span      8615 days (23.59 yr)  
   first obs. used      1995-06-03  
   last obs. used      2019-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57913  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:42:59  

Additional Information
 Earth MOID = 1.79078 au 
 Jupiter MOID = 1.61464 au 
 T_jup = 3.205 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457096.5 (2015-Mar-15.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1014646994368627 4.5812e-08  
q 2.803828537322842 1.4195e-07 au
tp 2457692.870050013769
(2016-Oct-31.37005001)
0.00014831 TDB
node 252.1436450005837 7.4141e-05 deg
peri 1.367744273418278 7.8795e-05 deg
i 4.182250017252358 5.1756e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      477  
   data-arc span      8615 days (23.59 yr)  
   first obs. used      1995-06-03  
   last obs. used      2019-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57913  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:42:59  

Additional Information
 Jupiter MOID = 1.61464 au 
 T_jup = 3.205 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.098709288185315E-15 -6.374170861542097E-15 -9.397491503914503E-13 -1.09146296503609E-14 -1.602322523710355E-13 -9.079714067137956E-16
q -6.374170861542097E-15 2.015001460685812E-14 2.775445923454238E-12 4.661191322418727E-14 4.130066741205888E-13 2.305236558477624E-15
tp -9.397491503914503E-13 2.775445923454238E-12 2.199438964644853E-8 2.897085541518594E-11 3.990574818456384E-9 2.039296255007851E-12
node -1.09146296503609E-14 4.661191322418727E-14 2.897085541518594E-11 5.496814408105668E-9 -5.477119267091467E-9 -4.935797131610746E-11
peri -1.602322523710355E-13 4.130066741205888E-13 3.990574818456384E-9 -5.477119267091467E-9 6.208604422899848E-9 4.957028510040276E-11
i -9.079714067137956E-16 2.305236558477624E-15 2.039296255007851E-12 -4.935797131610746E-11 4.957028510040276E-11 2.678655995093282E-11

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 15.1   n/a MPO333679  
diameter diameter 5.364 km 0.254 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.056   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109444 (2001 QG201)          Discovered 2001-Aug-22 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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