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109398 (2001 QW178)
Classification: Main-belt Asteroid          SPK-ID: 2109398
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2014430497038733 5.3061e-08  
a 2.601882876977223 1.2149e-08 au
q 2.077751655266643 1.3802e-07 au
i 18.24930481601216 5.6797e-06 deg
node 29.0931326880387 1.8376e-05 deg
peri 62.85393023922972 2.3763e-05 deg
M 17.09868270300554 1.2499e-05 deg
tp 2458527.690140349001
(2019-Feb-13.19014035)
5.3193e-05 TDB
period 1532.957241773496
4.20
1.0737e-05
2.94e-08
d
yr
n .2348402096222278 1.6448e-09 deg/d
Q 3.126014098687802 1.4597e-08 au
  Orbit Determination Parameters
   # obs. used (total)      721  
   data-arc span      7280 days (19.93 yr)  
   first obs. used      1999-04-06  
   last obs. used      2019-03-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48667  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:31:32  

Additional Information
 Earth MOID = 1.15452 au 
 Jupiter MOID = 2.40895 au 
 T_jup = 3.315 
[ 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 14.6   n/a MPO459511  
diameter diameter 5.403 km 1.431 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.084   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

109398 (2001 QW178)          Discovered 2001-Aug-27 by NEAT at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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