204 Kallisto
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| Discovery A | |
|---|---|
| Discoverer | Johann Palisa |
| Discovery date | October 8, 1879 |
| Alternate designations B |
n/a |
| Category | Main belt |
| Orbital elements C | |
|
|
|
| Eccentricity (e) | 0.172 |
| Semi-major axis (a) | 399.759 Gm (2.672 AU) |
| Perihelion (q) | 331.062 Gm (2.213 AU) |
| Aphelion (Q) | 468.456 Gm (3.131 AU) |
| Orbital period (P) | 1595.51 d (4.37 a) |
| Mean orbital speed | 18.22 km/s |
| Inclination (i) | 8.272° |
| Longitude of the ascending node (Ω) |
205.217° |
| Argument of perihelion (ω) |
55.712° |
| Mean anomaly (M) | 2.235° |
| Physical characteristics D | |
| Dimensions | 49.0 km |
| Mass | unknown |
| Density | unknown |
| Surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | 14.10 h |
| Spectral class | S |
| Absolute magnitude | 8.89 |
| Albedo (geometric) | 0.208 |
| Mean surface temperature |
unknown |
204 Kallisto is a fairly typical, although sizeable Main belt asteroid. It is classified as an S-type asteroid. Like other asteroids of its type, it is light in colour.
It was discovered by Johann Palisa on October 8, 1879 in Pola.
The asteroid was named after the same nymph Callisto in Greek mythology as Jupiter's moon Callisto.
[edit] Aspects
| stationary, then retrograde | Opposition | Minimal distance (AU) | Maximum brightness (mag) | stationary, then prograde | Conjunction to sun | |
|---|---|---|---|---|---|---|
| 1 July 2005 | 18 August 2005 | 1.40601 | 12.0 | 11 August 2005 | 10 April 2006 | |
| 1 October 2006 | 22 November 2006 | 2.11191 | 13.2 | 20 November 2006 | 27 June 2007 | |
| 13 December 2007 | 4 February 2008 | 1.91349 | 13.0 | 9 February 2008 | 30 September 2008 | |
| 6 May 2009 | 16 June 2009 | 1.20581 | 11.5 | 15 June 2009 | 3 March 2010 | |
| 4 September 2010 | 26 October 2010 | 1.93059 | 12.8 | 20 October 2010 | 31 May 2011 | |
| 13 November 2011 | 6 January 2012 | 2.10730 | 13.3 | 9 January 2012 | 20 August 2012 | |
| 4 March 2013 | 14 April 2013 | 1.35479 | 11.5 | 21 April 2013 | 9 January 2014 | |
| 2 August 2014 | 22 September 2014 | 1.64241 | 12.4 | 14 September 2014 | 3 May 2015 | |
| 19 October 2015 | 12 December 2015 | 2.16129 | 13.4 | 11 December 2015 | 18 July 2016 | |
| 10 January 2017 | 28 February 2017 | 1.69288 | 12.5 | 7 March 2017 | 8 November 2017 | |
| 17 June 2018 | 4 August 2018 | 1.32962 | 11.8 | 29 July 2018 | 1 April 2019 | |
| 24 September 2019 | 16 November 2019 | 2.07609 | 13.1 | 12 November 2019 | 19 June 2020 | |
| 4 December 2020 | 26 January 2021 | 1.97821 | 13.1 | 31 January 2021 | 18 September 2021 |
[edit] References
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Light-curve Parameters
- Asteroid Albedo Compilation
| Minor planets | ||
|---|---|---|
| Previous minor planet | 204 Kallisto | 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. |
