Astronomy:3360 Syrinx
| Discovery | |
|---|---|
| Discovered by | Eleanor F. Helin R. Scott Dunbar |
| Discovery date | 4 November 1981 |
| Designations | |
| (3360) Syrinx | |
| Pronunciation | /ˈsɪrɪŋks/[1] |
| Named after | Syrinx |
| 1981 VA | |
| Minor planet category |
|
| Orbital characteristics[2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 12556 days (34.38 yr) |
| |{{{apsis}}}|helion}} | 4.30603 astronomical unit|AU (644.173 Gm) |
| |{{{apsis}}}|helion}} | 0.62791 AU (93.934 Gm) |
| 2.46697 AU (369.053 Gm) | |
| Eccentricity | 0.74547 |
| Orbital period | 3.87 yr (1415.3 d) |
| Mean anomaly | 315.35° |
| Mean motion | 0° 15m 15.732s / day |
| Inclination | 21.154° |
| Longitude of ascending node | 242.561° |
| 63.457° | |
| Earth MOID | 0.107877 AU (16.1382 Gm) |
| Physical characteristics | |
| Dimensions | 1.8 km |
| Mean radius | 0.9 km |
| Geometric albedo | 0.17 |
| Absolute magnitude (H) | 15.9 |
3360 Syrinx (originally designated 1981 VA) is an Apollo and Mars crosser asteroid discovered in 1981. It approaches Earth to within 40 Gm three times in the 21st century: 33 Gm in 2039, 40 Gm in 2070, and 24 Gm in 2085.
On 2012-Sep-20 it passed 0.4192 astronomical unit|AU (62,710,000 km; 38,970,000 mi) from the Earth[2] at apparent magnitude 17.0.[3] In opposition on 23 November 2012, it brightened to magnitude 16.0.[3]
It is a member of the Alinda group of asteroids with a 3:1 resonance with Jupiter that has excited the eccentricity of the orbit over the eons.[4] As an Alinda asteroid it makes approaches to Jupiter, Earth, and Venus.[2]
For a time, it was the lowest numbered asteroid that had not been named. In November 2006, this distinction passed to 3708 Socus, and in May 2021 to (4596) 1981 QB.
See also
- List of asteroids
- Syrinx
References
- ↑ syrinx (3rd ed.), Oxford University Press, September 2005, http://oed.com/search?searchType=dictionary&q=syrinx (Subscription or UK public library membership required.)
- ↑ 2.0 2.1 2.2 "JPL Close-Approach Data: 3360 Syrinx (1981 VA)". https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=Syrinx;cad=1#cad.
- ↑ 3.0 3.1 "NEODys (3360) Syrinx Ephemerides for 20 September 2012". Department of Mathematics, University of Pisa, Italy. https://newton.spacedys.com/neodys2/index.php?pc=1.1.3.1&n=3360&oc=500&y0=2012&m0=9&d0=20&h0=0&mi0=0&y1=2012&m1=11&d1=25&h1=0&mi1=0&ti=1.0&tiu=days.
- ↑ John S Lewis (2015-08-03). "The Alinda Family of Asteroids". http://www.johnslewis.com/2015/08/the-alinda-family-of-asteroids.html.
External links
- 3360 Syrinx at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 3360 Syrinx at ESA–space situational awareness
- 3360 Syrinx at the JPL Small-Body Database
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