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19 Fortuna (A852 QA)
Classification: Main-belt Asteroid          SPK-ID: 2000019
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 135 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1568159017160513 2.3188e-08  
a 2.442080913453113 3.0059e-09 au
q 2.059123792946405 5.69e-08 au
i 1.572878000607985 2.5895e-06 deg
node 211.0591240187102 0.00010245 deg
peri 182.3669045430124 0.00010287 deg
M 351.9012831360654 1.045e-05 deg
tp 2459231.858278735284
(2021-Jan-17.35827874)
4.049e-05 TDB
period 1393.922090914748
3.82
2.5736e-06
7.046e-09
d
yr
n .2582640754073662 4.7684e-10 deg/d
Q 2.825038033959822 3.4773e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3514  
   data-arc span      61484 days (168.33 yr)  
   first obs. used      1852-09-14  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50699  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:42:38  

Additional Information
 Earth MOID = 1.06418 au 
 Jupiter MOID = 2.60075 au 
 T_jup = 3.483 
[ hide covariance matrix ]
Orbital Elements at Epoch 2452750.5 (2003-Apr-21.0) TDB
Reference: JPL 135 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1589671330953832 2.3402e-08  
q 2.053941199663644 5.7634e-08 au
tp 2452262.034849873761
(2001-Dec-18.53484987)
3.5909e-05 TDB
node 211.3921831662175 0.00010235 deg
peri 182.2085568720626 0.00010275 deg
i 1.572499127859586 2.5944e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3514  
   data-arc span      61484 days (168.33 yr)  
   first obs. used      1852-09-14  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50699  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:42:38  

Additional Information
 Jupiter MOID = 2.60075 au 
 T_jup = 3.483 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.476621032634796E-16 -1.347488545410261E-15 9.145620744500053E-14 -1.680194662031225E-15 2.043243508959048E-14 6.121673087299403E-17
q -1.347488545410261E-15 3.321667685923329E-15 -2.160257049921635E-13 4.236840527273764E-15 -4.816566145055133E-14 -1.561630347824758E-16
tp 9.145620744500053E-14 -2.160257049921635E-13 1.289486017179205E-9 -8.605452641489053E-12 3.336879022606769E-10 -1.32914766816963E-13
node -1.680194662031225E-15 4.236840527273764E-15 -8.605452641489053E-12 1.047628610379237E-8 -1.047396688482475E-8 3.035984747690089E-11
peri 2.043243508959048E-14 -4.816566145055133E-14 3.336879022606769E-10 -1.047396688482475E-8 1.055748688949186E-8 -3.037650225818203E-11
i 6.121673087299403E-17 -1.561630347824758E-16 -1.32914766816963E-13 3.035984747690089E-11 -3.037650225818203E-11 6.730973326722503E-12

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.38   n/a E2021B10  
magnitude slope G 0.10   n/a PDS3 (MPC 17257) Fit
diameter diameter 200 km n/a J.G. Williams 9-90  
rotation period rot_per 7.4432 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Yang, X.-y.; Zhang, Y.-y.; Li, X.-q. (1965) Acta Astron. Sin. 13, 66-74.]
[Van Houten-Groeneveld, I.; van Houten, C.J.; Zappala, V. (1979) Astron. Astrophys. Suppl. Ser. 35, 223-232.]
[Lupishko, D.F.; Tupieva, F.A.; Velichko, F.P.; Kiselev, N.N.; Chernova, G.P. (1981) Astron. Vestn. 15, 25-31; Solar System Res. 15, 19-24.]
[Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1987) Icarus 70, 191-245.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1988) Icarus 76, 19-77.]
[Lagerkvist, C.I.; Magnusson, P.; Williams, I.P.; Buontempo, M.E.; et al. (1988) Astron. Astrophys. Suppl. Ser. 73, 395-405.]
[Magnusson, P. (1990) Icarus 85, 229-240.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1991) Icarus 89, 44-64.]
[Harris, A.W.; Young, J.W.; Dockweiler, T.; Gibson, J.; et al. (1992) Icarus 95, 115-147.]
[De Angelis, G. (1995) Planet. Space Sci. 43, 649-682.]
[Hainaut-Rouelle, M.-C.; Hainaut, O.R.; Detal, A. (1995) Astron. Astrophys. Suppl. Ser. 112, 125-142.]
[Blanco, C.; Di Martino, M.; Dotto, E.; Gilmore, A.C.; et al. (1996) Planet. Space Sci. 44, 87-91.]
[Denchev, P. (1999) Abstracts of ACM 1999, 117.]
[Harris, A.W.; Young, J.W.; Bowell, E.; Tholen, D.J. (1999) Icarus 142, 173-201.]
[Denchev, P. (2000) Planet. Space Sci. 48, 987-992.]
[Torppa, J.; Kaasalainen, M.; Michalowski, T.; Kwiatkowski, T.; et al. (2003) Icarus 164, 346-383.]
[Lopez-Gonzalez, M.J.; Rodriguez, E. (2005) Planet. Space Sci. 53, 1147-1165.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Drummond, J.; Merline, W.J.; Conrad, A.; Christou, J.; et al. (2011) EPSC-DPS2011 #1426.]
[Durech, J. (2011) Database of Asteroid Models from Inversion Techniques (DAMIT). http://astro.troja.mff.cuni.cz/projects/asteroids3D/web.php]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Hanus, J.; Viikinkoski, M.; Marchis, F.; Durech, J.; et al (2017) Astron. Astrophys. 601, A114.]
geometric albedo albedo 0.037   n/a EAR-A-5-DDR-ALBEDOS-V1.0:TRIAD TRIAD quality code 3
B-V BV 0.719   0.014 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=38; phase (min.=1.00, mean=9.64, max.=28.27) deg.
U-B UB 0.324   0.046 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=30; phase (min.=1.00, mean=8.23, max.=22.69) deg.
Tholen spectral type spec_T G   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Ch   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

19 Fortuna (A852 QA)          Discovered 1852-Aug-22 by Hind, J. R. at London
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A852 QA = A902 UG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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