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11695 Mattei (1998 FA74)
Classification: Main-belt Asteroid          SPK-ID: 2011695
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06823934689647194 3.6744e-08  
a 2.23461609722526 6.1272e-09 au
q 2.082127354186265 8.2788e-08 au
i 6.519789807086583 3.7823e-06 deg
node 24.99279499658572 3.0356e-05 deg
peri 116.2926231317057 3.9325e-05 deg
M 336.2632666547524 2.4643e-05 deg
tp 2459280.949113258339
(2021-Mar-07.44911326)
8.3527e-05 TDB
period 1220.120744997149
3.34
5.0182e-06
1.374e-08
d
yr
n .2950527654546527 1.2135e-09 deg/d
Q 2.387104840264255 6.5453e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1823  
   data-arc span      16218 days (44.40 yr)  
   first obs. used      1976-10-24  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47983  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 01:01:54  

Additional Information
 Earth MOID = 1.1029 au 
 Jupiter MOID = 2.60859 au 
 T_jup = 3.628 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457532.5 (2016-May-24.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0674616922964436 3.6768e-08  
q 2.083903627542956 8.2785e-08 au
tp 2458061.145172491494
(2017-Nov-03.64517249)
8.4706e-05 TDB
node 25.02761159501134 3.0326e-05 deg
peri 116.3275658713916 3.9506e-05 deg
i 6.523373402723632 3.784e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1823  
   data-arc span      16218 days (44.40 yr)  
   first obs. used      1976-10-24  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47983  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 01:01:54  

Additional Information
 Jupiter MOID = 2.60859 au 
 T_jup = 3.628 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.351899048771275E-15 -3.036634520078854E-15 8.067894265193965E-13 3.737392644714737E-15 2.560519522341608E-13 -2.252878420686082E-15
q -3.036634520078854E-15 6.853383232361511E-15 -1.823723791896357E-12 -7.996794226543247E-15 -5.833462237283045E-13 5.066814589530399E-15
tp 8.067894265193965E-13 -1.823723791896357E-12 7.175150874016767E-9 5.935292807350496E-13 2.153668742453771E-9 -8.136362975731574E-13
node 3.737392644714737E-15 -7.996794226543247E-15 5.935292807350496E-13 9.196378426972441E-10 -9.130536291927092E-10 -2.820563765950556E-11
peri 2.560519522341608E-13 -5.833462237283045E-13 2.153668742453771E-9 -9.130536291927092E-10 1.560737002312021E-9 2.777331597135684E-11
i -2.252878420686082E-15 5.066814589530399E-15 -8.136362975731574E-13 -2.820563765950556E-11 2.777331597135684E-11 1.431854249267179E-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 14.76   n/a MPCxxxxx  

11695 Mattei           Discovered 1998 Mar. 22 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Janet Akyüz Mattei (b. 1943), a tireless promoter of the observation of variable stars by amateurs, has been the director of the American Association of Variable Star Observers since 1973.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1998 FA74 = 1976 UL19 = 1996 TH65 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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