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30791 (1988 RY11)
Classification: Jupiter Trojan          SPK-ID: 2030791
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06096045345207145 7.1519e-08  
a 5.221106330674213 1.4072e-07 au
q 4.902825321234833 3.712e-07 au
i 24.68307514423331 6.1896e-06 deg
node 164.5018020473099 1.5476e-05 deg
peri 232.8246801104433 5.3274e-05 deg
M 201.6192539686838 5.3992e-05 deg
tp 2461117.588302839971
(2026-Mar-18.08830284)
0.00070534 TDB
period 4357.54854245937
11.93
0.00017617
4.823e-07
d
yr
n .08261525866945789 3.34e-09 deg/d
Q 5.539387340113594 1.493e-07 au
  Orbit Determination Parameters
   # obs. used (total)      565  
   data-arc span      12247 days (33.53 yr)  
   first obs. used      1987-07-29  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51293  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:40:04  

Additional Information
 Earth MOID = 3.95172 au 
 Jupiter MOID = .0222069 au 
 T_jup = 2.814 
[ 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 12.16   n/a MPCxxxxx  
diameter diameter 20.305 km 2.031 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.108   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

30791 (1988 RY11)          Discovered 1988-Sep-14 by Bus, S. J. at Cerro Tololo
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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