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JPL Small-Body Database Browser
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160033 (1998 QU81)
Classification: Main-belt Asteroid          SPK-ID: 2160033
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2635179620413294 8.1459e-08  
a 2.759979294042576 2.0204e-08 au
q 2.03267517520021 2.243e-07 au
i 16.15580059753137 9.8542e-06 deg
node 228.3977145788943 2.0062e-05 deg
peri 142.3300292017615 2.3592e-05 deg
M 159.6588705274738 1.3681e-05 deg
tp 2457857.741356183217
(2017-Apr-14.24135618)
5.8743e-05 TDB
period 1674.777673740523
4.59
1.839e-05
5.035e-08
d
yr
n .2149539044164351 2.3603e-09 deg/d
Q 3.487283412884944 2.5528e-08 au
  Orbit Determination Parameters
   # obs. used (total)      450  
   data-arc span      7559 days (20.70 yr)  
   first obs. used      1998-08-20  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51997  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:06:27  

Additional Information
 Earth MOID = 1.05725 au 
 Jupiter MOID = 2.08134 au 
 T_jup = 3.235 
[ 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 14.9   n/a MPO257715  
diameter diameter 7.153 km 0.335 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.041   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

160033 (1998 QU81)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20070730/Numbers.arcLast Updated: 2007-08-06

Alternate Designations
 1998 QU81 = 2003 QB79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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