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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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06903196899490782 4.4347e-08  
a 2.648678667359175 1.5584e-08 au
q 2.465835163716563 1.1911e-07 au
i 21.65757971111981 6.662e-06 deg
node 328.2869372636808 1.1965e-05 deg
peri 85.94525750247081 5.8184e-05 deg
M 323.8795274299432 5.414e-05 deg
tp 2459158.476781030368
(2020-Nov-04.97678103)
0.0002368 TDB
period 1574.498812567526
4.31
1.3896e-05
3.805e-08
d
yr
n .2286441864080864 2.018e-09 deg/d
Q 2.831522171001787 1.666e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1149  
   data-arc span      8103 days (22.18 yr)  
   first obs. used      1998-08-24  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48306  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:44:51  

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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