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120857 (1998 QX43)
Classification: Main-belt Asteroid          SPK-ID: 2120857
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2513909018855234 5.903e-08  
a 2.988579400425366 2.1436e-08 au
q 2.237277729595936 1.7076e-07 au
i 2.804781464470371 5.7742e-06 deg
node 91.13387152507971 0.00012191 deg
peri 258.328767291136 0.00012266 deg
M 74.81923594236083 1.4532e-05 deg
tp 2458608.301080459104
(2019-May-04.80108046)
7.4895e-05 TDB
period 1887.103085942945
5.17
2.0303e-05
5.559e-08
d
yr
n .1907685927078624 2.0525e-09 deg/d
Q 3.739881071254795 2.6825e-08 au
  Orbit Determination Parameters
   # obs. used (total)      374  
   data-arc span      9546 days (26.14 yr)  
   first obs. used      1993-10-15  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57024  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 10:02:33  

Additional Information
 Earth MOID = 1.23321 au 
 Jupiter MOID = 1.69766 au 
 T_jup = 3.206 
[ 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 15.4   n/a MPO459569  
diameter diameter 4.162 km 1.205 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.071   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120857 (1998 QX43)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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