| Discovery | |
|---|---|
| Discovered by | Mt. Lemmon Survey (G96) |
| Discovery date | 30 September 2014 |
| Designations | |
| MPC designation | 2014 SC324 |
| Minor planet category | |
| Orbital characteristics | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 1 | |
| Observation arc | 29 days w/Radar |
| Aphelion | 2.93880 AU (439.638 Gm) (Q) |
| Perihelion | 0.91503 AU (136.887 Gm) (q) |
| Semi-major axis | 1.92691 AU (288.262 Gm) (a) |
| Eccentricity | 0.52513 (e) |
| Orbital period (sidereal) | 2.67 yr (976.99 d) |
| Mean anomaly | 152.737° (M) |
| Mean motion | 0° 22 6.521 / day (n) |
| Inclination | 1.65403° (i) |
| Longitude of ascending node | 210.19563° (Ω) |
| Argument of perihelion | 221.35334° (ω) |
| Earth MOID | 0.000606726 AU (90,764.9 km) |
| Physical characteristics | |
| Dimensions | 37–85 m (generic) |
| Synodic rotation period | 0.36156 h (21.694 min) |
| Apparent magnitude | 24-29 (2014–2015) |
| Absolute magnitude (H) | 24.3 |
2014 SC324 is a sub-kilometer asteroid and fast rotator, classified as a near-Earth object of the Apollo group, approximately 50 meters in diameter. It was first observed on 30 September 2014, by the Mount Lemmon Survey at an apparent magnitude of 21 using a 1.5-meter (59 in) reflecting telescope. With an absolute magnitude of 24.3, the asteroid is about 37–85 meters in diameter.
Description
The preliminary orbit with a short observation arc of 2 days showed that the asteroid had a very small chance of passing 0.000125 AU (18,700 km; 11,600 mi) from the Moon or 0.0012 AU (180,000 km; 110,000 mi) from Earth on about 23 October 2014. But with an observation arc of 10 days, the nominal (best fit) orbit showed that on 24 October 2014 the asteroid would pass 0.0038 AU (570,000 km; 350,000 mi) (1.5 LD) from Earth and even further from the Moon. The asteroid peaked at apparent magnitude 13.5, placing it in the range of amateurs with roughly 0.25-meter (10 in) telescopes.
It was removed from the Sentry Risk Table on 10 October 2014 using JPL solution #5 with a 10-day observation arc.
It was observed by Goldstone radar on 24–25 October 2014.
References
- ^ "MPEC 2014-T10: 2014 SC324". IAU Minor Planet Center. 2 October 2014. Retrieved 2 October 2014. (K14SW4C)
- ^ "JPL Small-Body Database Browser: (2014 SC324)" (last observation: 2014-10-29; arc: 29 days). Jet Propulsion Laboratory. Retrieved 4 April 2016.
- ^ "Absolute Magnitude (H)". NASA/JPL. Archived from the original on 2 March 2001. Retrieved 2 October 2014.
- Webcite capture of JPL solution #1 for asteroid 2014 SC324 on 2014-Oct-02
ArchiveToday capture of JPL solution #1 for asteroid 2014 SC324 on 2014-Oct-02. url: N4eGm - "JPL Close-Approach Data: (2014 SC324)" (last observation: 2014-10-29; arc: 29 days). Retrieved 10 October 2014.
- "2014SC324 Ephemerides for 23 October 2014 and 24 October 2014". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 24 October 2014.
- "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Archived from the original on 2 June 2002. Retrieved 10 October 2014.
- Lance A. M. Benner. "Goldstone Radar Observations Planning: 2340 Hathor, 2014 SM143, 2014 RQ17, 2014 TV, and 2014 SC324". NASA/JPL Asteroid Radar Research. Retrieved 30 October 2014.
External links
- Near-Earth Asteroid 2014 SC324: an exceptional movie (Virtual Telescope Project – 25 October 2014)
- 2014 SC324 at NeoDyS-2, Near Earth Objects—Dynamic Site
- 2014 SC324 at ESA–space situational awareness
- 2014 SC324 at the JPL Small-Body Database
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