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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09126797530750567 2.7103e-08  
a 2.300281437745224 5.8281e-09 au
q 2.090339408284779 6.2452e-08 au
i 3.866912300191572 3.992e-06 deg
node 13.99153078604146 4.9991e-05 deg
peri 71.56764987880571 5.6303e-05 deg
M 36.06175099126214 2.4982e-05 deg
tp 2459072.851945914280
(2020-Aug-11.35194591)
8.8375e-05 TDB
period 1274.294736325859
3.49
4.8429e-06
1.326e-08
d
yr
n .2825092105755523 1.0737e-09 deg/d
Q 2.510223467205669 6.36e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1948  
   data-arc span      10811 days (29.60 yr)  
   first obs. used      1991-08-14  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4872  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:40:27  

Additional Information
 Earth MOID = 1.1099 au 
 Jupiter MOID = 2.63755 au 
 T_jup = 3.583 
[ 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 14.55   n/a MPCxxxxx  
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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