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46844 (1998 QW22)
Classification: Main-belt Asteroid          SPK-ID: 2046844
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09090846345507417 3.5706e-08  
a 2.299916838411661 7.8414e-09 au
q 2.090834932557204 8.4849e-08 au
i 3.86705597067058 4.6138e-06 deg
node 14.00184713540643 5.5201e-05 deg
peri 71.61694727249987 6.1433e-05 deg
M 226.4510311621411 2.7427e-05 deg
tp 2459073.111912883023
(2020-Aug-11.61191288)
9.7825e-05 TDB
period 1273.991780831005
3.49
6.5153e-06
1.784e-08
d
yr
n .2825763913211257 1.4451e-09 deg/d
Q 2.508998744266117 8.5542e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1579  
   data-arc span      10305 days (28.21 yr)  
   first obs. used      1991-08-14  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49289  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:29:07  

Additional Information
 Earth MOID = 1.11069 au 
 Jupiter MOID = 2.64005 au 
 T_jup = 3.584 
[ 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 14.5   n/a MPO385115  
diameter diameter 2.677 km 0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.470   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46844 (1998 QW22)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QW22 = 1991 PP31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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