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18971 (2000 QY177)
Classification: Jupiter Trojan          SPK-ID: 2018971
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1193987199717481 4.3232e-08  
a 5.201289179571254 8.3673e-08 au
q 4.580261909327542 2.5884e-07 au
i 14.03425015652619 5.3054e-06 deg
node 189.9788672008551 1.6059e-05 deg
peri 44.14323906012388 2.698e-05 deg
M 24.38036256420995 1.9427e-05 deg
tp 2459103.071302252850
(2020-Sep-10.57130225)
0.00023545 TDB
period 4332.762932083862
11.86
0.00010455
2.862e-07
d
yr
n .08308786001980872 2.0049e-09 deg/d
Q 5.822316449814966 9.3663e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1399  
   data-arc span      14399 days (39.42 yr)  
   first obs. used      1982-01-23  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46412  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:44:29  

Additional Information
 Earth MOID = 3.5878 au 
 Jupiter MOID = .646609 au 
 T_jup = 2.926 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.77   n/a MPCxxxxx  
diameter diameter 24.839 km 0.476 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.060   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

18971 (2000 QY177)          Discovered 2000-Aug-31 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 QY177 = 1999 RB131 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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