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18044 (1999 RS89)
Classification: Main-belt Asteroid          SPK-ID: 2018044
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2851353674587394 4.052e-08  
a 2.53868649478142 6.1635e-09 au
q 1.81481718822938 1.0408e-07 au
i 5.793884905330218 4.8949e-06 deg
node 153.9616279260775 2.4291e-05 deg
peri 221.7128052821454 2.6061e-05 deg
M 83.4362184154039 9.4665e-06 deg
tp 2458858.076038408049
(2020-Jan-09.57603841)
3.8282e-05 TDB
period 1477.447426480488
4.05
5.3805e-06
1.473e-08
d
yr
n .2436634925532184 8.8736e-10 deg/d
Q 3.262555801333459 7.9209e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2028  
   data-arc span      9312 days (25.49 yr)  
   first obs. used      1995-09-21  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50339  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:39:49  

Additional Information
 Earth MOID = .819054 au 
 Jupiter MOID = 2.20921 au 
 T_jup = 3.382 
[ 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 14.59   n/a MPCxxxxx  

18044 (1999 RS89)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RS89 = 1995 SN54 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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