2017 DR109

2017 DR₁₀₉
Discovery
Discovered by	Catalina Sky Srvy.
Discovery site	Mount Lemmon Obs.
Discovery date	27 February 2017
Designations
Minor planet category	NEO · Apollo · Aten
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 6
Observation arc	(5 days)
Aphelion	1.2422 AU
Perihelion	0.7591 AU
Semi-major axis	1.0006 AU
Eccentricity	0.2414
Orbital period (sidereal)	1.00 yr (366 days)
Mean anomaly	263.04°
Mean motion	0° 59m 4.92s / day
Inclination	3.0600°
Longitude of ascending node	341.31°
Argument of perihelion	72.094°
Earth MOID	0.0062 AU (2.4 LD)
Physical characteristics
Mean diameter	9–20 m (estimate)[a]
Absolute magnitude (H)	27.6

2017 DR₁₀₉ is a micro-asteroid, classified as a near-Earth object of the Apollo group and Aten group, respectively. It is currently trapped in a 1:1 mean motion resonance with the Earth of the horseshoe type. The object was first observed on 27 February 2017, by astronomers of the Catalina Sky Survey conducted at Mount Lemmon Observatory, Arizona, United States.

Discovery

2017 DR₁₀₉ was first observed by astronomer D. C. Fuls on 27 February 2017, using the 0.68-meter Schmidt camera of the Catalina Sky Survey at a visual apparent magnitude of 19.6.^: 6

Orbit and physical properties

The asteroid's orbit has still a high uncertainty; with a very short observation arc of just 5 days. It orbits the Sun at a distance of 0.76–1.24 AU once every 366 days (semi-major axis of 1.00 AU). Its orbit has an eccentricity of 0.24 and an inclination of 3° with respect to the ecliptic. With a semi-major axis of that of Earth, the object is both classified as a member of Apollo and Aten in the JPL Small-Body Database and by the Minor Planet Center, respectively. Both Apollo and Aten asteroids are Earth-crossing asteroids.

Earth co-orbital

2017 DR₁₀₉ is currently trapped in a 1:1 mean motion resonance with the Earth of the horseshoe type and follows an orbit similar to those of 54509 YORP, 2017 FZ2 and several other near-Earth asteroids.

Physical characteristics

2017 DR₁₀₉ has an absolute magnitude of 27.6 which gives a calculated mean diameter between 9 and 20 meters for an assumed geometric albedo of 0.20 and 0.04, respectively, which are typical values for stony S-type and carbonaceous C-type asteroids.

Notes

^{^} This is assuming an albedo of 0.20 and 0.04, respectively.

References

1 2 3 4 5 6 "JPL Small-Body Database Browser: (2017 DR109)" (2017-03-04 last obs.). Jet Propulsion Laboratory. Retrieved 8 February 2018.
1 2 3 "2017 DR109". Minor Planet Center. Retrieved 8 February 2018.
1 2 "2017 DR109 – Summary". NEODyS-2, Near Earth Objects – Dynamic Site. Retrieved 8 February 2018.
1 2 "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 8 February 2018.
1 2 3 de la Fuente Marcos, Carlos; de la Fuente Marcos, Raúl (January 2018). "Asteroid 2017 FZ₂ et al.: signs of recent mass-shedding from YORP?". Monthly Notices of the Royal Astronomical Society. 473 (3): 3434–3453. arXiv:1709.09379. Bibcode:2018MNRAS.473.3434D. doi:10.1093/mnras/stx2540.

External links

MPEC 2017-E31 : 2017 DR109, Minor Planet Electronic Circular
List Of Apollo Minor Planets (by designation)
2017 DR₁₀₉ at AstDys-2, Asteroids – Dynamic Site
2017 DR109 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemerides · Observation prediction · Orbital info · MOID · Proper elements · Observational info · Close approaches · Physical info · Orbit animation
2017 DR109 at ESA–space situational awareness
- Ephemerides · Observations · Orbit · Physical properties · Summary
2017 DR109 at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

[jpldata-1] 1 2 3 4 5 6 "JPL Small-Body Database Browser: (2017 DR109)" (2017-03-04 last obs.). Jet Propulsion Laboratory. Retrieved 8 February 2018.

[MPC-object-2] 1 2 3 "2017 DR109". Minor Planet Center. Retrieved 8 February 2018.

[NEODyS-3] 1 2 "2017 DR109 – Summary". NEODyS-2, Near Earth Objects – Dynamic Site. Retrieved 8 February 2018.

[h-4] 1 2 "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 8 February 2018.

[Fuente-Marcos-2018-5] 1 2 3 de la Fuente Marcos, Carlos; de la Fuente Marcos, Raúl (January 2018). "Asteroid 2017 FZ₂ et al.: signs of recent mass-shedding from YORP?". Monthly Notices of the Royal Astronomical Society. 473 (3): 3434–3453. arXiv:1709.09379. Bibcode:2018MNRAS.473.3434D. doi:10.1093/mnras/stx2540.