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46855 (1998 QR44)
Classification: Main-belt Asteroid          SPK-ID: 2046855
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1769279129398268 3.2044e-08  
a 2.471691799183133 1.0246e-08 au
q 2.034380527723176 8.0663e-08 au
i 4.281055039873139 3.7278e-06 deg
node 157.0912242652331 5.4185e-05 deg
peri 149.8655969583615 5.5758e-05 deg
M 239.4422236896834 1.6326e-05 deg
tp 2459475.816214718583
(2021-Sep-18.31621472)
6.5911e-05 TDB
period 1419.351306366514
3.89
8.8252e-06
2.416e-08
d
yr
n .2536369948618193 1.5771e-09 deg/d
Q 2.90900307064309 1.2058e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1300  
   data-arc span      8414 days (23.04 yr)  
   first obs. used      1997-04-04  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54925  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:35:34  

Additional Information
 Earth MOID = 1.02099 au 
 Jupiter MOID = 2.34813 au 
 T_jup = 3.458 
[ 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 15.1   n/a MPO365800  
diameter diameter 2.968 km 0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.220   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

46855 (1998 QR44)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QR44 = 2001 FO3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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