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74711 (1999 RL155)
Classification: Main-belt Asteroid          SPK-ID: 2074711
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1514439308060538 3.7674e-08  
a 2.271827221911679 8.7189e-09 au
q 1.927772777313177 8.7746e-08 au
i 3.761217593081612 3.7568e-06 deg
node 241.1594477143589 6.5611e-05 deg
peri 144.9909695363124 6.7153e-05 deg
M 348.2650202844888 1.5876e-05 deg
tp 2459041.270047555166
(2020-Jul-10.77004756)
5.5289e-05 TDB
period 1250.723688977458
3.42
7.2001e-06
1.971e-08
d
yr
n .2878333585368658 1.657e-09 deg/d
Q 2.615881666510181 1.0039e-08 au
  Orbit Determination Parameters
   # obs. used (total)      891  
   data-arc span      7791 days (21.33 yr)  
   first obs. used      1998-04-21  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56222  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:44:02  

Additional Information
 Earth MOID = .93361 au 
 Jupiter MOID = 2.82919 au 
 T_jup = 3.594 
[ 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 15.6   n/a MPO436305  

74711 (1999 RL155)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RL155 = 1998 HX60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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