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91449 (1999 RQ24)
Classification: Main-belt Asteroid          SPK-ID: 2091449
[ 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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07815679994034111 3.7806e-08  
a 2.964848656048535 1.9624e-08 au
q 2.733125572784361 1.1851e-07 au
i 9.791338605913044 5.9428e-06 deg
node 6.082184830575224 2.3771e-05 deg
peri 83.68352317343768 4.8985e-05 deg
M 298.9978156087641 4.0185e-05 deg
tp 2459316.469459036853
(2021-Apr-11.96945904)		 0.00020721 TDB
period 1864.671017741612
5.11		 1.8513e-05
5.069e-08		 d
yr
n .1930635466389199 1.9168e-09 deg/d
Q 3.19657173931271 2.1158e-08 au
   Orbit Determination Parameters
   # obs. used (total)      811  
   data-arc span      7741 days (21.19 yr)  
   first obs. used      1999-09-07  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49133  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:19:20  

Additional Information
 Earth MOID = 1.77141 au 
 Jupiter MOID = 1.97334 au 
 T_jup = 3.238 
[ 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 14.4   n/a MPO412707  

91449 (1999 RQ24)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 RQ24 = 1999 ST13 = 2000 XY9 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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