(388188) 2006 DP14

(388188) 2006 DP14
Discovery [1]
Discovered by LINEAR
Discovery site Lincoln Lab's ETS
Discovery date 23 February 2006
Designations
MPC designation (388188) 2006 DP14
2006 DP14
Apollo · NEO · PHA
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 10.10 yr (3,690 days)
Aphelion 2.4263 AU
Perihelion 0.3054 AU
1.3658 AU
Eccentricity 0.7764
1.60 yr (583 days)
223.82°
0° 37m 3s / day
Inclination 11.788°
317.28°
59.180°
Earth MOID 0.0162 AU
Physical characteristics
Dimensions 0.4 km[2]
0.493 km (calculated)[3]
5.77±0.01 h[4]
5.78±0.02 h[5]
6 h[2]
0.20 (assumed)[3]
S [3]
18.80±0.02[5]
18.9[1][3]

    (388188) 2006 DP14 is a highly eccentric asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 400 meters in diameter. It was discovered by LINEAR at Lincoln Lab's ETS in Socorro, New Mexico, on 23 February 2006.[6] On 10 February 2014, it passed 6.2 lunar distances from Earth.[2]

    The stony S-type asteroid orbits the Sun at a distance of 0.3–2.4 AU once every 1 years and 7 months (583 days). Its orbit has an eccentricity of 0.78 and an inclination of 12° with respect to the ecliptic.[1] As no precoveries were taken, the body's observation arc begins with its discovery observation in 2006.[6] The asteroid has an Earth minimum orbit intersection distance of 0.0162 AU (2,420,000 km),[1] which corresponds to the close approach distance observed in February 2014.

    Radar-imaging of 2006 DP14

    On the night of February 11, 2014 NASA scientists conducted a radar imaging session using the 70-meter dish at Goldstone Observatory.[2] These observations, using delay-Doppler radar imaging, revealed a 400×200 meters peanut-like shape,[2] while the Collaborative Asteroid Lightcurve Link calculates a diameter of almost 500 meters, based on an assumed standard albedo for stony asteroids of 0.20 and an absolute magnitude of 18.9.[3] Amateur and professional astronomers helped track the asteroid in the preceding days, so they would know just where to point the large antenna.[2]

    Goldstone's radiometric observations also gave a rotation period of approximately 6 hours.[2] Photometric follow-up observations led to two light-curves that gave a refined period of 5.77 and 5.78 hours with a high brightness variation of 1.05 and 0.9, respectively (U=3/3).[4][5]

    References

    1. 1 2 3 4 5 "JPL Small-Body Database Browser: 388188 (2006 DP14)" (2016-04-01 last obs.). Jet Propulsion Laboratory. Retrieved 9 September 2016.
    2. 1 2 3 4 5 6 7 "Radar Images of near-Earth Asteroid 2006 DP14". Jet Propulsion Laboratory. 25 February 2014. Retrieved 9 September 2016.
    3. 1 2 3 4 5 "LCDB Data for (388188)". Asteroid Lightcurve Database (LCDB). Retrieved 9 September 2016.
    4. 1 2 Warner, Brian D. (July 2014). "Near-Earth Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2014 January-March". The Minor Planet Bulletin. 41 (3): 157–168. Bibcode:2014MPBu...41..157W. ISSN 1052-8091. Retrieved 9 September 2016.
    5. 1 2 3 Hicks, M.; Ebelhar, S. (February 2014). "Broad-band Photometry of the Potentially Hazardous Asteroid 2006 DP14". The Astronomer's Telegram (5928). Bibcode:2014ATel.5928....1H. Retrieved 9 September 2016.
    6. 1 2 "388188 (2006 DP14)". Minor Planet Center. Retrieved 9 September 2016.

    External links

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