3360 Syrinx (original) (raw)
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Apollo asteroid
(3360) Syrinx
| Discovery | |
|---|---|
| Discovered by | Eleanor F. HelinR. Scott Dunbar |
| Discovery date | 4 November 1981 |
| Designations | |
| MPC designation | (3360) Syrinx |
| Pronunciation | [1] |
| Named after | Syrinx |
| Alternative designations | 1981 VA |
| Minor planet category | ApolloMars crosserAlinda family |
| Orbital characteristics[2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 12556 days (34.38 yr) |
| Aphelion | 4.30603 AU (644.173 Gm) |
| Perihelion | 0.62791 AU (93.934 Gm) |
| Semi-major axis | 2.46697 AU (369.053 Gm) |
| Eccentricity | 0.74547 |
| Orbital period (sidereal) | 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° |
| Argument of perihelion | 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 20 September 2012, it closely encountered Earth at a distance of 0.4192 AU (62,710,000 km; 38,970,000 mi),[2] peaking in brightness at an apparent magnitude of 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.[_citation needed_]
- ^ "syrinx". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
- ^ a b c "JPL Close-Approach Data: 3360 Syrinx (1981 VA)" (2009-01-22 last obs). Retrieved 14 April 2016.
- ^ a b "NEODys (3360) Syrinx Ephemerides for 20 September 2012". Department of Mathematics, University of Pisa, Italy. Retrieved 25 March 2012.
- ^ John S Lewis (3 August 2015). "The Alinda Family of Asteroids". Retrieved 26 June 2019.
- 3360 Syrinx at NeoDyS-2, Near Earth Objects—Dynamic Site
- 3360 Syrinx at ESA–space situational awareness
- 3360 Syrinx at the JPL Small-Body Database
