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74161 (1998 QF101)
Classification: Main-belt Asteroid          SPK-ID: 2074161
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2179734616286607 6.2193e-08  
a 2.666515482121825 2.2114e-08 au
q 2.085285871997314 1.71e-07 au
i 3.092852836129811 6.4115e-06 deg
node 56.80864462769547 0.00011788 deg
peri 297.9563713318258 0.00011869 deg
M 263.7585785683092 1.8579e-05 deg
tp 2459025.681264457961
(2020-Jun-25.18126446)
8.6192e-05 TDB
period 1590.430117592424
4.35
1.9785e-05
5.417e-08
d
yr
n .2263538624035643 2.8158e-09 deg/d
Q 3.247745092246337 2.6934e-08 au
  Orbit Determination Parameters
   # obs. used (total)      495  
   data-arc span      8912 days (24.40 yr)  
   first obs. used      1994-12-28  
   last obs. used      2019-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61119  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:07:23  

Additional Information
 Earth MOID = 1.08196 au 
 Jupiter MOID = 2.19488 au 
 T_jup = 3.347 
[ 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 MPO253815  
diameter diameter 4.928 km 0.266 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74161 (1998 QF101)          Discovered 1998-Aug-26 by Elst, E. W. at La Silla
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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