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101017 (1998 QR56)
Classification: Main-belt Asteroid          SPK-ID: 2101017
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .174389433083083 3.9377e-08  
a 2.358434554672594 7.4831e-09 au
q 1.947148489719687 9.2715e-08 au
i .7442747714530056 3.5531e-06 deg
node 338.8010523546129 0.00033483 deg
peri 72.7436053310319 0.00033528 deg
M 9.654849275794694 1.2932e-05 deg
tp 2459165.020526346093
(2020-Nov-11.52052635)
4.7586e-05 TDB
period 1322.92179303393
3.62
6.2963e-06
1.724e-08
d
yr
n .2721249297544581 1.2951e-09 deg/d
Q 2.769720619625502 8.7881e-09 au
  Orbit Determination Parameters
   # obs. used (total)      598  
   data-arc span      8195 days (22.44 yr)  
   first obs. used      1998-08-26  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5773  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:34:48  

Additional Information
 Earth MOID = .95726 au 
 Jupiter MOID = 2.59186 au 
 T_jup = 3.532 
[ 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 16.94   n/a E2021B55  
diameter diameter 1.245 km 0.357 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.198   0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101017 (1998 QR56)          Discovered 1998-Aug-30 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 QR56 = 2002 XN24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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