Astronomy:2006 JY26
| Discovery | |
|---|---|
| Discovered by | E. J. Christensen (Catalina Sky Survey) |
| Discovery date | 6 May 2006 |
| Designations | |
| 2006 JY26 | |
| Minor planet category | |
| Orbital characteristics[1][2][3] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 3 | |
| |{{{apsis}}}|helion}} | 1.094127 astronomical unit|AU (163.6791 Gm) |
| |{{{apsis}}}|helion}} | 0.926254 AU (138.5656 Gm) |
| 1.010191 AU (151.1224 Gm) | |
| Eccentricity | 0.083090 |
| Orbital period | 1.02 yr (370.85 d) |
| Mean anomaly | 114.637° |
| Mean motion | 0° 58m 14.632s / day |
| Inclination | 1.43911° |
| Longitude of ascending node | 43.4687° |
| 273.635° | |
| Jupiter MOID | 3.98181 AU (595.670 Gm) |
| Physical characteristics | |
| Dimensions | 6–13 m[a][4] |
| Absolute magnitude (H) | 28.4[1] |
2006 JY26 is a near-Earth object that is also horseshoe companion to the Earth like 3753 Cruithne.[5]
Discovery, orbit and physical properties
2006 JY26 was discovered by E. J. Christensen on 6 May 2006, observing for the Catalina Sky Survey.[6][7] Its orbit is characterized by low eccentricity (0.083), low inclination (1.44º) and a semi-major axis of 1.01 AU.[7] Upon discovery, it was classified as an Apollo asteroid but also an Earth crosser by the Minor Planet Center. The orbit is based on 76 observations spanning a data-arc of 4 days.[8] 2006 JY26 has an absolute magnitude (H) of 28.4 which gives a characteristic diameter of about 9 meters.[8]
Impact risk
| Date | Impact probability (1 in) |
JPL Horizons nominal geocentric distance (AU) |
uncertainty region (3-sigma) |
|---|---|---|---|
| 2073-05-03 09:36 | 330 thousand | 0.025 astronomical unit|AU (3.7 million km) | ±2.4 million km |
| 2074-05-03 00:43 | 210 | 0.0099 AU (1.48 million km) | ±2.8 million km[10] |
| 2075-05-01 10:34 | 2.4 million | 0.14 AU (21 million km) | ±23 million km |
It is listed on the Sentry Risk Table with a 1 in 210 chance of impacting Earth on 3 May 2074.[9][11] The nominal best-fit orbit shows that 2006 JY26 will be 0.0099 astronomical unit|AU (1,480,000 km; 920,000 mi) from Earth on 3 May 2074.[8] An impact from this object would be less severe than the Chelyabinsk meteor.
Horseshoe companion to the Earth and orbital evolution
Recent calculations indicate that it follows a horseshoe orbit with respect to the Earth.[5] It had a close encounter with the Earth on 10 May 2006, at 0.0029 AU (430,000 km; 270,000 mi).[8] Its orbital evolution is very chaotic and its orbit is difficult to predict beyond a few hundred years.[5] Its orbit matches the expected properties of that of an object in the Arjuna-class.
Origin
It may have been originated within the Venus–Earth–Mars region or in the main asteroid belt like other near-Earth objects, then transition to Amor-class asteroid before entering Earth's co-orbital region.[5]
See also
Notes
- ^ This is assuming an albedo of 0.20–0.04.
References
- ↑ 1.0 1.1 1.2 "2006 JY26". JPL Small-Body Database. Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3332535.
- ↑ AstDys-2 on 2006 JY26 Retrieved 2013-05-11
- ↑ NEODyS-2 on 2006 JY26 Retrieved 2013-05-11
- ↑ Absolute-magnitude conversion table (H)
- ↑ 5.0 5.1 5.2 5.3 de la Fuente Marcos, C.; de la Fuente Marcos, R. (July 2013). "A resonant family of dynamically cold small bodies in the near-Earth asteroid belt". Monthly Notices of the Royal Astronomical Society: Letters 434 (1): L1–L5. doi:10.1093/mnrasl/slt062. Bibcode: 2013MNRAS.434L...1D. http://adsabs.harvard.edu/doi/10.1093/mnrasl/slt062.
- ↑ Discovery MPEC
- ↑ 7.0 7.1 MPC data on 2006 JY26
- ↑ 8.0 8.1 8.2 8.3 JPL's Solar System Dynamics data on 2006 JY26
- ↑ 9.0 9.1 "Earth Impact Risk Summary: 2006 JY26". NASA/JPL Near-Earth Object Program Office. https://cneos.jpl.nasa.gov/sentry/details.html#?des=2006%20JY26.
- ↑ "Horizons Batch for 2074-May-03 Virtual Impactor". JPL Horizons. https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272006+JY26%27&START_TIME=%272074-05-03%2000:43%27&STOP_TIME=%272074-05-04%27&STEP_SIZE=%271%20day%27&QUANTITIES=%2720,39%27. Retrieved 2022-07-05. RNG_3sigma = uncertainty range in km. (JPL#10/Soln.date: 2021-Apr-14 generates RNG_3sigma = 2825568 km for 2074-May-03.)
- ↑ "Impactor Table: 2006JY26". NEODyS-2. https://newton.spacedys.com/neodys/index.php?pc=1.1.2&n=2006JY26. (1 in 741)
- Further reading
- A resonant family of dynamically cold small bodies in the near-Earth asteroid belt de la Fuente Marcos, C., de la Fuente Marcos, R. 2013, Monthly Notices of the Royal Astronomical Society: Letters, Vol. 434, Issue 1, pp. L1–L5.
External links
- 2006 JY26 data at MPC
- 2006 JY26 Earth Impact Risk Summary
- MPEC 2006-J38 : 2006 JY26 (Discovery MPEC)
- 2006 JY26 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 2006 JY26 at ESA–space situational awareness
- 2006 JY26 at the JPL Small-Body Database
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