(6037)_1988_EG Knowpia

(6037) 1988 EG
Discovery
Discovered by	J. Alu
Discovery site	Palomar Obs.
Discovery date	12 March 1988
Designations
MPC designation	(6037) 1988 EG
Alternative designations	1988 EG
Minor planet category	Apollo · NEO · PHA
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	28.24 yr (10,315 days)
Aphelion	1.9064 AU
Perihelion	0.6359 AU
Semi-major axis	1.2711 AU
Eccentricity	0.4997
Orbital period (sidereal)	1.43 yr (523 days)
Mean anomaly	261.93°
Mean motion	0° 41m 15.72s / day
Inclination	3.4998°
Longitude of ascending node	182.48°
Argument of perihelion	242.07°
Earth MOID	0.0243 AU · 9.5 LD
Physical characteristics
Mean diameter	0.399±0.027 km; 0.54 km (derived)
Synodic rotation period	2.760±0.002 h
Geometric albedo	0.20 (assumed); 0.37±0.05
Spectral type	S
Absolute magnitude (H)	18.7 · 19.18±0.20

(6037) 1988 EG (provisional designation 1988 EG) is an eccentric, stony asteroid, classified as near-Earth object and potentially hazardous asteroid. It belongs to the group of Apollo asteroids and measures approximately half a kilometer in diameter. It was discovered by American astronomer Jeff T. Alu at the U.S. Palomar Observatory, California, on 12 March 1988.^[2]

Classification and orbit edit

An S-type asteroid, 1988 EG orbits the Sun at a distance of 0.6–1.9 AU once every 1 years and 5 months (523 days). Its orbit has an eccentricity of 0.50 and an inclination of 3° with respect to the ecliptic.^[1]

The asteroid has an Earth minimum orbit intersection distance (MOID) of 0.0243 AU (3,600,000 km). In combination with its size, this makes it a potentially hazardous asteroid. A PHA requires a MOID with Earth of less than 0.05 AU, which is about 19.5 times the distance to the Moon, and a diameter of at least 150 meters. On 27 February 2041, it will pass 0.02437 AU (3,646,000 km) from Earth. It also makes close approaches to Mars and Venus.^[1]

Physical characteristics edit

Lightcurve edit

An ambiguous lightcurve was obtained through photometric observations by Czech astronomer Petr Pravec in 1998. The light-curve gave a rotation period of 2.760±0.002 hours with a brightness amplitude of 0.20 in magnitude. The alternative period solution is 2.919±0.22 hours with an amplitude of 0.22 in magnitude (U=2).^[a]

Diameter and albedo edit

The Collaborative Asteroid Lightcurve Link (CALL) assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 540 meters, based on an absolute magnitude of 18.7.^[4] Observations with the Spitzer Space Telescope using its Infrared Array Camera at wavelengths between 3.6 and 8.0 micrometers, gave an average diameter of 399 meters with a higher albedo of 0.37.^[3]

Notes edit

^ ^a ^b Pravec (1998) web: rotation period 2.760±0.002 hours with a brightness amplitude of 0.20 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (6037) and Pravec, P.; Wolf, M.; Sarounova, L. (1998)

References edit

^ ^a ^b ^c ^d ^e "JPL Small-Body Database Browser: 6037 (1988 EG)" (2016-06-08 last obs.). Jet Propulsion Laboratory. Retrieved 26 May 2017.
^ ^a ^b "6037 (1988 EG)". Minor Planet Center. Retrieved 29 June 2016.
^ ^a ^b ^c Trilling, D. E.; Mueller, M.; Hora, J. L.; Fazio, G.; Spahr, T.; Stansberry, J. A.; et al. (August 2008). "Diameters and Albedos of Three Subkilometer Near-Earth Objects Derived from Spitzer Observations". The Astrophysical Journal Letters. 683 (2). arXiv:0807.1717. Bibcode:2008ApJ...683L.199T. doi:10.1086/591668. Retrieved 29 June 2016.
^ ^a ^b ^c ^d ^e "LCDB Data for (6037)". Asteroid Lightcurve Database (LCDB). Retrieved 29 June 2016.
^ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 29 June 2016.

External links edit

Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
Dictionary of Minor Planet Names, Google books
Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
(6037) 1988 EG at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemerides · Observation prediction · Orbital info · MOID · Proper elements · Observational info · Close approaches · Physical info · Orbit animation
(6037) 1988 EG at ESA–space situational awareness
- Ephemerides · Observations · Orbit · Physical properties · Summary
(6037) 1988 EG at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

[Pravec-1998-lcdb-5] Pravec (1998) web: rotation period 2.760±0.002 hours with a brightness amplitude of 0.20 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (6037) and Pravec, P.; Wolf, M.; Sarounova, L. (1998)

[jpldata-1] "JPL Small-Body Database Browser: 6037 (1988 EG)" (2016-06-08 last obs.). Jet Propulsion Laboratory. Retrieved 26 May 2017.

[MPC-6037-2] "6037 (1988 EG)". Minor Planet Center. Retrieved 29 June 2016.

[Trilling-2008-3] Trilling, D. E.; Mueller, M.; Hora, J. L.; Fazio, G.; Spahr, T.; Stansberry, J. A.; et al. (August 2008). "Diameters and Albedos of Three Subkilometer Near-Earth Objects Derived from Spitzer Observations". The Astrophysical Journal Letters. 683 (2). arXiv:0807.1717. Bibcode:2008ApJ...683L.199T. doi:10.1086/591668. Retrieved 29 June 2016.

[lcdb-4] "LCDB Data for (6037)". Asteroid Lightcurve Database (LCDB). Retrieved 29 June 2016.

[Veres-2015-6] Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 29 June 2016.

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