30 Urania
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| Discovery A | |
|---|---|
| Discoverer | J. R. Hind |
| Discovery date | July 22, 1854 |
| Alternate designations B |
1948 JK |
| Category | Main belt |
| Orbital elements C | |
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|
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| Eccentricity (e) | 0.126 |
| Semi-major axis (a) | 354.077 Gm (2.367 AU) |
| Perihelion (q) | 309.338 Gm (2.068 AU) |
| Aphelion (Q) | 398.817 Gm (2.666 AU) |
| Orbital period (P) | 1330.017 d (3.64 a) |
| Mean orbital speed | 19.28 km/s |
| Inclination (i) | 2.097° |
| Longitude of the ascending node (Ω) |
307.820° |
| Argument of perihelion (ω) |
86.560° |
| Mean anomaly (M) | 196.549° |
| Physical characteristics D | |
| Dimensions | 100.15 km † |
| Mass | 1.1×1018? kg |
| Density | 2.0? g/cm³ |
| Surface gravity | 0.0280? m/s² |
| Escape velocity | 0.0529? km/s |
| Rotation period | 0.57025 d (13.686 h) [1] |
| Spectral class | S |
| Absolute magnitude | 7.57 |
| Albedo (geometric) | 0.1714 † |
| Mean surface temperature |
~177 K |
30 Urania (ew-ray'-nee-ə (key)) is a large Main belt asteroid.
Urania was discovered by J. R. Hind on July 22, 1854. It was his last asteroid discovery. It is named after Urania, the Greek Muse of astronomy.
[edit] Aspects
| Stationary, retrograde |
Opposition | Distance to Earth (AU) |
Maximum brightness (mag) |
Stationary, prograde |
Conjunction to Sun |
|---|---|---|---|---|---|
| 16 November 2004 | 31 December 2004 | 1.22560 | 9.9 | 12 February 2005 | 9 September 2005 |
| 7 March 2006 | 27 April 2006 | 1.66159 | 11.0 | 16 June 2006 | 21 December 2006 |
| 21 July 2007 | 3 September 2007 | 1.15547 | 9.7 | 15 October 2007 | 5 June 2008 |
| 1 January 2009 | 18 February 2009 | 1.47270 | 10.5 | 6 April 2009 | 17 October 2009 |
| 16 April 2010 | 4 June 2010 | 1.56622 | 10.8 | 24 July 2010 | 5 February 2011 |
| 2 October 2011 | 12 November 2011 | 1.08379 | 9.6 | 21 December 2011 | 5 August 2012 |
| 7 February 2013 | 30 March 2013 | 1.63339 | 10.9 | 18 May 2013 | 22 November 2013 |
| 4 June 2014 | 20 July 2014 | 1.34671 | 10.2 | 5 September 2014 | 10 April 2015 |
| 29 November 2015 | 13 January 2016 | 1.28167 | 10.0 | 26 February 2016 | 18 September 2016 |
| 16 March 2017 | 5 May 2017 | 1.65301 | 11.0 | 25 June 2017 | 30 December 2017 |
| 6 August 2018 | 18 September 2018 | 1.11438 | 9.6 | 29 October 2018 | 20 June 2019 |
| 10 January 2020 | 28 February 2020 | 1.51915 | 10.6 | 17 April 2020 | 25 October 2020 |
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This article about an S-type asteroid native to the Main Belt is a stub. You can help Wikipedia by expanding it. |
| Minor planets | ||
|---|---|---|
| Previous minor planet | 30 Urania | Next minor planet |
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| Vulcanoids | Near-Earth asteroids | Main belt | Jupiter Trojans | Centaurs | Damocloids | Comets | Trans-Neptunians (Kuiper belt · Scattered disc · Oort cloud) |
| 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. |
