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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2513908677751262 5.8859e-08  
a 2.98857938934679 2.136e-08 au
q 2.237277823244044 1.7024e-07 au
i 2.80478618472455 5.7699e-06 deg
node 91.13371248706247 0.00012102 deg
peri 258.3289316547603 0.00012177 deg
M 74.81923498540017 1.4443e-05 deg
tp 2458608.301087656252
(2019-May-04.80108766)
7.4456e-05 TDB
period 1887.103075449792
5.17
2.0232e-05
5.539e-08
d
yr
n .1907685937686227 2.0452e-09 deg/d
Q 3.739880955449536 2.673e-08 au
  Orbit Determination Parameters
   # obs. used (total)      395  
   data-arc span      9618 days (26.33 yr)  
   first obs. used      1993-10-15  
   last obs. used      2020-02-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57316  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:54:14  

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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