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160554 (1998 QJ87)
Classification: Main-belt Asteroid          SPK-ID: 2160554
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1806512821885896 4.4728e-08  
a 2.747591162756199 1.9849e-08 au
q 2.251235296274253 1.2913e-07 au
i 11.1849682351243 5.0906e-06 deg
node 304.9101900218974 2.2609e-05 deg
peri 57.54898538658422 2.6258e-05 deg
M 313.9739218587944 1.4778e-05 deg
tp 2459413.180691088554
(2021-Jul-17.68069109)
6.9672e-05 TDB
period 1663.514509252381
4.55
1.8026e-05
4.935e-08
d
yr
n .2164092936957862 2.3451e-09 deg/d
Q 3.243947029238143 2.3435e-08 au
  Orbit Determination Parameters
   # obs. used (total)      670  
   data-arc span      8003 days (21.91 yr)  
   first obs. used      1998-08-19  
   last obs. used      2020-07-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55867  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:01:50  

Additional Information
 Earth MOID = 1.26803 au 
 Jupiter MOID = 2.28642 au 
 T_jup = 3.296 
[ 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 MPO436809  
diameter diameter 5.790 km 0.258 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.043   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

160554 (1998 QJ87)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

Alternate Designations
 1998 QJ87 = 1998 QR96 = 2000 CK121 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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