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74143 (1998 QP77)
Classification: Main-belt Asteroid          SPK-ID: 2074143
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06903196870331239 4.4341e-08  
a 2.648678667707681 1.5494e-08 au
q 2.465835164813353 1.1906e-07 au
i 21.65757930000547 6.5923e-06 deg
node 328.286937366686 1.1963e-05 deg
peri 85.94525855427896 5.7876e-05 deg
M 323.8795261561265 5.3749e-05 deg
tp 2459158.476786632721
(2020-Nov-04.97678663)
0.00023508 TDB
period 1574.498812878279
4.31
1.3816e-05
3.783e-08
d
yr
n .2286441863629597 2.0063e-09 deg/d
Q 2.831522170602009 1.6564e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1165  
   data-arc span      8113 days (22.21 yr)  
   first obs. used      1998-08-24  
   last obs. used      2020-11-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48109  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:08:50  

Additional Information
 Earth MOID = 1.56074 au 
 Jupiter MOID = 2.39448 au 
 T_jup = 3.288 
[ 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 14.0   n/a MPO493387  
diameter diameter 4.658 km 0.782 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.296   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74143 (1998 QP77)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QP77 = 2002 OG12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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