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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1194124335888742 4.4844e-08  
a 5.20087425954693 8.6847e-08 au
q 4.579825207424697 2.7156e-07 au
i 14.03445512440969 5.4954e-06 deg
node 189.9809340178904 1.6091e-05 deg
peri 43.99951300106793 2.7113e-05 deg
M 8.205877107667458 1.9885e-05 deg
tp 2459101.750372559085
(2020-Sep-09.25037256)
0.00023973 TDB
period 4332.244489198113
11.86
0.00010851
2.971e-07
d
yr
n .08309780320515453 2.0814e-09 deg/d
Q 5.821923311669163 9.7217e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1305  
   data-arc span      14276 days (39.09 yr)  
   first obs. used      1982-01-23  
   last obs. used      2021-02-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47512  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:43:23  

Additional Information
 Earth MOID = 3.58563 au 
 Jupiter MOID = .646788 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 11.78   n/a E2021B10  
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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