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180618 (2004 FD121)
Classification: Main-belt Asteroid          SPK-ID: 2180618
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1091277203415604 4.615e-08  
a 2.673875201814798 2.2422e-08 au
q 2.382081296562919 1.2834e-07 au
i 13.3614680715169 5.9532e-06 deg
node 151.9668369771832 2.3951e-05 deg
peri 109.7116133529182 4.2903e-05 deg
M 243.4321276750942 3.9223e-05 deg
tp 2459717.614238306415
(2022-May-18.11423831)
0.00017735 TDB
period 1597.019162118947
4.37
2.0087e-05
5.5e-08
d
yr
n .2254199627275273 2.8354e-09 deg/d
Q 2.965669107066676 2.4868e-08 au
  Orbit Determination Parameters
   # obs. used (total)      262  
   data-arc span      9539 days (26.12 yr)  
   first obs. used      1995-02-05  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61107  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:08:47  

Additional Information
 Earth MOID = 1.40321 au 
 Jupiter MOID = 2.22673 au 
 T_jup = 3.333 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457735.5 (2016-Dec-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1102625613427446 4.6033e-08  
q 2.378669568066686 1.2833e-07 au
tp 2458120.084205906523
(2018-Jan-01.58420591)
0.00016625 TDB
node 152.0249842208364 2.3934e-05 deg
peri 109.541777495863 4.266e-05 deg
i 13.3672468314758 5.9566e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      262  
   data-arc span      9539 days (26.12 yr)  
   first obs. used      1995-02-05  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61107  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:08:47  

Additional Information
 Jupiter MOID = 2.22673 au 
 T_jup = 3.333 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.119066002754591E-15 -5.837977442606891E-15 -2.102862498906506E-12 8.015391014203179E-15 -4.57196070926012E-13 6.006871797470255E-15
q -5.837977442606891E-15 1.646760142704923E-14 7.09850024346265E-12 -2.469961579338814E-14 1.515153860273118E-12 -1.63083341638704E-14
tp -2.102862498906506E-12 7.09850024346265E-12 2.763925582897851E-8 -5.723226245006606E-11 5.904335674485949E-9 -1.411477723662523E-11
node 8.015391014203179E-15 -2.469961579338814E-14 -5.723226245006606E-11 5.728521696878619E-10 -5.688990557677894E-10 3.771534296860661E-11
peri -4.57196070926012E-13 1.515153860273118E-12 5.904335674485949E-9 -5.688990557677894E-10 1.819916375469087E-9 -3.965509286764247E-11
i 6.006871797470255E-15 -1.63083341638704E-14 -1.411477723662523E-11 3.771534296860661E-11 -3.965509286764247E-11 3.548106896045706E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.23   n/a MPCxxxxx  

180618 (2004 FD121)          Discovered 2004-Mar-23 by LINEAR at Socorro
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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