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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06882457955770961 4.4299e-08  
a 2.650039769394535 1.7209e-08 au
q 2.467651896454746 1.1926e-07 au
i 21.64977923611454 7.6457e-06 deg
node 328.2977183080534 1.2095e-05 deg
peri 85.49285075710488 6.3929e-05 deg
M 232.8751510767063 6.0961e-05 deg
tp 2459156.922858663961
(2020-Nov-03.42285866)
0.00026782 TDB
period 1575.71262279252
4.31
1.5349e-05
4.202e-08
d
yr
n .2284680561624228 2.2254e-09 deg/d
Q 2.832427642334324 1.8393e-08 au
  Orbit Determination Parameters
   # obs. used (total)      949  
   data-arc span      7724 days (21.15 yr)  
   first obs. used      1998-08-24  
   last obs. used      2019-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51761  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:50:11  

Additional Information
 Earth MOID = 1.56061 au 
 Jupiter MOID = 2.39593 au 
 T_jup = 3.287 
[ 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 14.1   n/a MPO359264  
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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