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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 138 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1568158857267689 1.792e-08  
a 2.442080913162499 2.4807e-09 au
q 2.059123831748485 4.4566e-08 au
i 1.5728761916168 4.5838e-07 deg
node 211.0591282192307 1.0399e-05 deg
peri 182.3668810885488 1.1826e-05 deg
M 351.9013006373423 8.191e-06 deg
tp 2459231.858210964640
3.1745e-05 TDB
period 1393.922090665927
n .2582640754534674 3.9352e-10 deg/d
Q 2.825037994576513 2.8697e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3603  
   data-arc span      61534 days (168.47 yr)  
   first obs. used      1852-09-14  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51473  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 17:44:00  

Additional Information
 Earth MOID = 1.06418 au 
 Jupiter MOID = 2.60075 au 
 T_jup = 3.483 
[ 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 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,]
[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).]
[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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