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109363 (2001 QU157)
Classification: Main-belt Asteroid          SPK-ID: 2109363
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1896085461924207 4.0897e-08  
a 2.353358165937424 1.0376e-08 au
q 1.907141345423967 9.7759e-08 au
i 4.08903090957509 4.9559e-06 deg
node 309.9388501394689 6.397e-05 deg
peri 139.5179565693182 6.5413e-05 deg
M 336.296933641768 1.5461e-05 deg
tp 2459087.322542996255
(2020-Aug-25.82254300)
5.6943e-05 TDB
period 1318.652827708793
3.61
8.7209e-06
2.388e-08
d
yr
n .2730058984710275 1.8055e-09 deg/d
Q 2.79957498645088 1.2343e-08 au
  Orbit Determination Parameters
   # obs. used (total)      613  
   data-arc span      7626 days (20.88 yr)  
   first obs. used      1998-12-14  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55282  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 12:51:29  

Additional Information
 Earth MOID = .925851 au 
 Jupiter MOID = 2.40128 au 
 T_jup = 3.528 
[ show covariance matrix ]

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 16.0   n/a MPO302591  
diameter diameter 4.229 km 0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.047   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109363 (2001 QU157)          Discovered 2001-Aug-23 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 QU157 = 1998 XY71 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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