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19170 (1991 FH)
Classification: Main-belt Asteroid          SPK-ID: 2019170
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1308839398505346 3.2725e-08  
a 3.180563884516409 1.8133e-08 au
q 2.764279152364581 1.0221e-07 au
i 19.44850158532226 4.0869e-06 deg
node 206.6276681738407 1.0634e-05 deg
peri 339.3360090194771 1.8924e-05 deg
M 88.52354541359666 1.4593e-05 deg
tp 2458691.039039299066
(2019-Jul-26.53903930)
8.4435e-05 TDB
period 2071.832358221006
5.67
1.7718e-05
4.851e-08
d
yr
n .1737592322909352 1.486e-09 deg/d
Q 3.596848616668237 2.0507e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1765  
   data-arc span      10859 days (29.73 yr)  
   first obs. used      1991-02-10  
   last obs. used      2020-11-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49375  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:47:40  

Additional Information
 Earth MOID = 1.77031 au 
 Jupiter MOID = 1.396 au 
 T_jup = 3.098 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457230.5 (2015-Jul-27.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1307406711492279 3.2598e-08  
q 2.76302498698706 1.0179e-07 au
tp 2456616.142010219897
(2013-Nov-19.64201022)
8.8629e-05 TDB
node 206.705558998977 1.063e-05 deg
peri 338.3040407792186 1.8977e-05 deg
i 19.45582443095994 4.0881e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1765  
   data-arc span      10859 days (29.73 yr)  
   first obs. used      1991-02-10  
   last obs. used      2020-11-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49375  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:47:40  

Additional Information
 Jupiter MOID = 1.396 au 
 T_jup = 3.098 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.06261290426847E-15 -3.278772345305394E-15 4.763837759211859E-13 1.754157359350938E-15 7.523026222823928E-14 -1.951222700420696E-15
q -3.278772345305394E-15 1.036023050851327E-14 -1.942953815913169E-12 -1.152750770180955E-14 -2.980444572257749E-13 6.049586098836733E-15
tp 4.763837759211859E-13 -1.942953815913169E-12 7.855052677533325E-9 1.290084908428972E-11 1.403661322926952E-9 -7.719557363118324E-12
node 1.754157359350938E-15 -1.152750770180955E-14 1.290084908428972E-11 1.130042430727819E-10 -1.04904862691776E-10 1.031190142449257E-11
peri 7.523026222823928E-14 -2.980444572257749E-13 1.403661322926952E-9 -1.04904862691776E-10 3.601317482496963E-10 -1.115857405575715E-11
i -1.951222700420696E-15 6.049586098836733E-15 -7.719557363118324E-12 1.031190142449257E-11 -1.115857405575715E-11 1.671252659390257E-11

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 13.16   n/a E2021B10  
diameter diameter 12.603 km 0.225 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 25.0082 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.077   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19170 (1991 FH)          Discovered 1991-Mar-18 by McNaught, R. H. at Siding Spring
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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