25 Phocaea

**25 Phocaea**
Discovery ^A

Discoverer	J. Chacornac
Discovery date	April 6, 1853
Alternate designations ^B	1956 GC
Category	Main belt
Orbital elements ^C
Epoch June 14, 2006 (JD 2453900.5)
Eccentricity (e)	0.255
Semi-major axis (a)	359.015 G m (2.400 AU)
Perihelion (q)	267.314 Gm (1.787 AU)
Aphelion (Q)	450.716 Gm (3.013 AU)
Orbital period (P)	1357.936 d (3.72 a)
Mean orbital speed	18.91 km/s
Inclination (i)	21.584°
Longitude of the ascending node (Ω)	214.268°
Argument of perihelion (ω)	90.154°
Mean anomaly (M)	6.932°
Physical characteristics ^D
Dimensions	75.1 km
Mass	4.4×10¹⁷? kg
Density	2.0? g/cm³
Surface gravity	0.0210? m/s²
Escape velocity	0.0397? km/s
Rotation period	0.4144 d (9.945 h) ^[1]
Spectral class	S
Absolute magnitude	7.83
Albedo (geometric)	0.231 ^[2]
Mean surface temperature	~173 K
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25 Phocaea (foe-see'-ə, fə-see'-ə (key)) is a Main belt asteroid.

It was discovered by J. Chacornac on April 6, 1853. It was his first asteroid discovery. It is named after Phocaea, the ancient Greek name for Foça in Turkey.

[edit] Aspects

Stationary, retrograde	Opposition	Distance to Earth (AU)	Maximum brightness (mag)	Stationary, prograde	Conjunction to Sun
11 January 2005	8 March 2005	1.82532	11.9	21 April 2005	7 November 2005
14 August 2006	26 September 2006	0.99533	10.0	18 October 2006	31 May 2007
15 November 2007	12 January 2008	2.10276	12.5	3 March 2008	23 August 2008
16 February 2009	5 April 2009	1.44852	11.0	18 May 2009	15 January 2010
24 September 2010	9 November 2010	1.38260	10.8	25 December 2010	26 June 2011
4 December 2011	3 February 2012	2.11572	12.5	22 March 2012	18 September 2012
11 April 2013	16 May 2013	1.03737	10.0	30 June 2013	4 April 2014
17 October 2014	8 December 2014	1.77506	11.8	29 January 2015	20 July 2015
27 December 2015	25 February 2016	1.96560	12.2	10 April 2016	18 October 2016
29 June 2017	14 August 2017	0.92165	10.0	2 September 2017	15 May 2018
5 November 2018	31 December 2018	2.03214	12.3	22 February 2019	12 August 2019
28 January 2020	21 March 2020	1.65867	11.6	3 May 2020	3 December 2020

This article about an S-type asteroid native to the Main Belt is a stub. You can help Wikipedia by expanding it.

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