19 Fortuna

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**19 Fortuna**
Discovery ^A

Discoverer	John Russell Hind
Discovery date	August 22, 1852
Alternate designations ^B	A902 UG
Category	Main belt
Orbital elements ^C
Epoch October 22, 2004 (JD 2453300.5)
Eccentricity (e)	0.159
Semi-major axis (a)	365.235 G m (2.441 AU)
Perihelion (q)	307.028 Gm (2.052 AU)
Aphelion (Q)	423.443 Gm (2.831 AU)
Orbital period (P)	1393.378 d (3.81 a)
Mean orbital speed	18.94 km/s
Inclination (i)	1.573°
Longitude of the ascending node (Ω)	211.379°
Argument of perihelion (ω)	182.091°
Mean anomaly (M)	268.398°
Physical characteristics ^D
Dimensions	225.0 km ¹
Mass	1.2×10¹⁹ kg
Density	2.0? g/cm³
Surface gravity	0.0629 m/s²
Escape velocity	0.1190 km/s
Rotation period	0.3101 d (7.443 h) ²
Spectral class	G
Absolute magnitude	7.13
Albedo (geometric)	0.061 ³
Mean surface temperature	~180 K
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19 Fortuna (for-tew'-nə (key)) is one of the largest Main belt asteroids. It has a composition similar to 1 Ceres: a darkly colored surface and composition of primitive carbon compounds (incl. tholin).

It was discovered by J. R. Hind on August 22, 1852 and named after Fortuna, the Roman goddess of luck.

The Hubble Space Telescope observed Fortuna in 1993. It was resolved with an apparent diameter of 0.20 arcseconds (4.5 pixels in the Planetary Camera) and its shape was found to be nearly spherical. Satellites were searched for but none were detected [1].

Stellar occultations by Fortuna have been observed several times.

[edit] Aspects

Stationary, retrograde	Opposition	Distance to Earth (AU)	Maximum brightness (mag)	Stationary, prograde	Conjunction to Sun
April 14, 2004	June 3, 2004	1.69587	10.6	July 25, 2004	January 29, 2005
September 25, 2005	November 4 2005	1.06687	8.9	December 13, 2005	July 30, 2006
January 29, 2007	March 21, 2007	1.74661	10.6	May 10, 2007	November 7, 2007
May 4, 2008	June 22, 2008	1.57874	10.4	August 12, 2008	February 26, 2009
October 28, 2009	December 9, 2009	1.14993	9.3	January 19, 2010	August 22, 2010
February 14, 2011	April 7, 2011	1.80469	10.7	May 28, 2011	November 23, 2011
May 28, 2012	July 15, 2012	1.43222	10.0	August 31, 2012	April 2, 2013
November 24, 2013	January 8, 2014	1.29526	9.7	February 20, 2014	September 11, 2014
March 3, 2015	April 23, 2015	1.82253	10.8	June 14, 2015	December 10, 2015
June 26, 2016	August 10, 2016	1.27234	9.6	September 23, 2016	May 11, 2017
December 16, 2017	February 2, 2018	1.45382	10.1	March 19, 2018	September 29, 2018
March 20, 2019	May 9, 2019	1.79963	10.7	July 1, 2019	December 29, 2018
July 31, 2020	September 11, 2020	1.13191	9.2	October 22, 2020	June 17, 2021

Minor planets
Previous minor planet	19 Fortuna	Next minor planet

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For other objects and regions, see: asteroid groups and families, binary asteroids, asteroid moons and the Solar system For a complete listing, see: List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names.