Astronomy:3360 Syrinx

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(3360) Syrinx
Discovery
Discovered byEleanor F. Helin
R. Scott Dunbar
Discovery date4 November 1981
Designations
(3360) Syrinx
Pronunciation/ˈsɪrɪŋks/[1]
Named afterSyrinx
1981 VA
Minor planet category
  • Apollo
  • Mars crosser
  • Alinda family
Orbital characteristics[2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc12556 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)
Eccentricity0.74547
Orbital period3.87 yr (1415.3 d)
Mean anomaly315.35°
Mean motion0° 15m 15.732s / day
Inclination21.154°
Longitude of ascending node242.561°
63.457°
Earth MOID0.107877 AU (16.1382 Gm)
Physical characteristics
Dimensions1.8 km
Mean radius0.9 km
Geometric albedo0.17
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

References

External links