(385343) 2002 LV

(385343) 2002 LV
Discovery[1]
Discovered byLINEAR
Discovery siteLincoln Lab's ETS
Discovery date1 June 2002
Designations
(385343) 2002 LV
2002 LV
Apollo · NEO · PHA[1][2]
Orbital characteristics[2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc14.74 yr (5,382 d)
Aphelion3.7146 AU
Perihelion0.9138 AU
2.3142 AU
Eccentricity0.6051
3.52 yr (1,286 d)
148.86°
0° 16m 48s / day
Inclination29.541°
132.20°
224.20°
Earth MOID0.0071 AU (2.766 LD)
Physical characteristics
1.359±0.555 km[3]
1.42 km (calculated)[4]
1.73 km[5]
6.195±0.012 h[a]
6.20±0.01 h[6][7]
0.15[5]
0.20 (assumed)[4]
0.2158±0.4209[3]
Sr[8] · S (assumed)[4]
16.5[5]
16.60[2][4][3]

(385343) 2002 LV, provisional designation 2002 LV, is a stony asteroid on a highly eccentric orbit, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 1.5 kilometers (0.9 miles) in diameter. It was discovered on 1 June 2002, by astronomers with the Lincoln Near-Earth Asteroid Research at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States.[1] The Sr-type asteroid has a rotation period of 6.2 hours and is likely elongated.[4]

Orbit and classification

2002 LV is a member of the Earth-crossing group of Apollo asteroids, the largest group of near-Earth objects with approximately 10 thousand known members.[1][2]

It orbits the Sun at a distance of 0.9–3.7 AU once every 3 years and 6 months (1,286 days; semi-major axis of 2.31 AU). Its orbit has an eccentricity of 0.61 and an inclination of 30° with respect to the ecliptic.[2] Due to its large aphelion, it also crosses the orbit of Mars at 1.66 AU.[2] The body's observation arc begins with its official discovery observation at Socorro in June 2002.[1]

Close approaches

The asteroid has an Earth minimum orbital intersection distance of 0.0071 AU (1,060,000 km; 660,000 mi), which corresponds to 2.7 lunar distances and makes it a potentially hazardous asteroid due to its notably large size.[2] In August 1935, it approached Earth at a nominal distance of 0.035 AU (14 LD), and in July 2002 at 0.112 AU (44 LD). Its closest near-Earth encounter is predicted to occur on 4 August 2076 at a distance of 0.0108 AU (4.2 LD) only (see table).[9]

History of close approaches of large near-Earth objects since 1908 (A)
PHA Date Approach distance (lunar dist.) Abs.
mag

(H)
Diameter (C)
(m)
Ref (D)
Nomi-
nal(B)
Mini-
mum
Maxi-
mum
(33342) 1998 WT24 1908-12-16 3.542 3.537 3.547 17.9 556–1795 data
(458732) 2011 MD5 1918-09-17 0.911 0.909 0.913 17.9 556–1795 data
(7482) 1994 PC1 1933-01-17 2.927 2.927 2.928 16.8 749–1357 data
69230 Hermes 1937-10-30 1.926 1.926 1.927 17.5 668–2158 data
69230 Hermes 1942-04-26 1.651 1.651 1.651 17.5 668–2158 data
(137108) 1999 AN10 1946-08-07 2.432 2.429 2.435 17.9 556–1795 data
(33342) 1998 WT24 1956-12-16 3.523 3.523 3.523 17.9 556–1795 data
(163243) 2002 FB3 1961-04-12 4.903 4.900 4.906 16.4 1669–1695 data
(192642) 1999 RD32 1969-08-27 3.627 3.625 3.630 16.3 1161–3750 data
(143651) 2003 QO104 1981-05-18 2.761 2.760 2.761 16.0 1333–4306 data
2017 CH1 1992-06-05 4.691 3.391 6.037 17.9 556–1795 data
(170086) 2002 XR14 1995-06-24 4.259 4.259 4.260 18.0 531–1714 data
(33342) 1998 WT24 2001-12-16 4.859 4.859 4.859 17.9 556–1795 data
4179 Toutatis 2004-09-29 4.031 4.031 4.031 15.3 2440–2450 data
2014 JO25 2017-04-19 4.573 4.573 4.573 17.8 582–1879 data
(137108) 1999 AN10 2027-08-07 1.014 1.010 1.019 17.9 556–1795 data
(35396) 1997 XF11 2028-10-26 2.417 2.417 2.418 16.9 881–2845 data
(154276) 2002 SY50 2071-10-30 3.415 3.412 3.418 17.6 714–1406 data
(164121) 2003 YT1 2073-04-29 4.409 4.409 4.409 16.2 1167–2267 data
(385343) 2002 LV 2076-08-04 4.184 4.183 4.185 16.6 1011–3266 data
(52768) 1998 OR2 2079-04-16 4.611 4.611 4.612 15.8 1462–4721 data
(33342) 1998 WT24 2099-12-18 4.919 4.919 4.919 17.9 556–1795 data
(85182) 1991 AQ 2130-01-27 4.140 4.139 4.141 17.1 1100 data
314082 Dryope 2186-07-16 3.709 2.996 4.786 17.5 668–2158 data
(137126) 1999 CF9 2192-08-21 4.970 4.967 4.973 18.0 531–1714 data
(290772) 2005 VC 2198-05-05 1.951 1.791 2.134 17.6 638–2061 data
(A) List includes near-Earth approaches of less than 5 lunar distances (LD) of objects with H brighter than 18.
(B) Nominal geocentric distance from the Earth's center to the object's center (Earth radius≈0.017 LD).
(C) Diameter: estimated, theoretical mean-diameter based on H and albedo range between X and Y.
(D) Reference: data source from the JPL SBDB, with AU converted into LD (1 AU≈390 LD)
(E) Color codes:   unobserved at close approach   observed during close approach   upcoming approaches

Physical characteristics

Observations with the Spitzer Space Telescope characterized this object as an Sr-subtype that transitions from the common, stony S-type asteroids to the uncommon R-types.[8]

Rotation period

In July 2002, a rotational lightcurve of this asteroid was obtained from photometric observations by Petr Pravec at Ondřejov Observatory in the Czech Republic. Lightcurve analysis gave a well-defined rotation period of 6.195 hours with a high brightness amplitude of 0.93 magnitude, indicative for an elongated, non-spherical shape (U=3).[a] The result agrees with a period of 6.2 hours measured at the Table Mountain Observatory and at the CS3-Palmer Divide Station (U82) in 2009 and 2016, respectively (U=2+/3-).[6][7]

Diameter and albedo

According to post-cryogenic observations with the Spitzer Telescope during the ExploreNEOs survey, and observations carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, this asteroid measures between 1.359 and 1.73 kilometers in diameter and its surface has an albedo between 0.15 and 0.2158.[3][5] The Collaborative Asteroid Lightcurve Link assumes a stony standard albedo of 0.20 and calculates a diameter of 1.42 kilometers based on an absolute magnitude of 16.6.[4]

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 14 February 2014 (M.P.C. 87072).[10] As of 2018, it has not been named.[1]

Notes

  1. ^ a b Lightcurve by Pravec on 22 July 2002: rotation period 6.195±0.012 hours with a brightness amplitude of 0.94 mag. Quality code of 3. Summary figures for (385343) 2002 LV at the LCDB and Pravec, P.; Wolf, M.; Sarounova, L. (2002) (see data).

References

  1. ^ a b c d e f "385343 (2002 LV)". Minor Planet Center. Retrieved 20 April 2018.
  2. ^ a b c d e f g "JPL Small-Body Database Browser: 385343 (2002 LV)" (2017-02-24 last obs.). Jet Propulsion Laboratory. Retrieved 20 April 2018.
  3. ^ a b c d Masiero, Joseph R.; Nugent, C.; Mainzer, A. K.; Wright, E. L.; Bauer, J. M.; Cutri, R. M.; et al. (October 2017). "NEOWISE Reactivation Mission Year Three: Asteroid Diameters and Albedos". The Astronomical Journal. 154 (4): 10. arXiv:1708.09504. Bibcode:2017AJ....154..168M. doi:10.3847/1538-3881/aa89ec. S2CID 45334910.
  4. ^ a b c d e f "LCDB Data for (385343)". Asteroid Lightcurve Database (LCDB). Retrieved 20 April 2018.
  5. ^ a b c d Trilling, D. E.; Mueller, M.; Hora, J. L.; Harris, A. W.; Bhattacharya, B.; Bottke, W. F.; et al. (September 2010). "ExploreNEOs. I. Description and First Results from the Warm Spitzer Near-Earth Object Survey" (PDF). The Astronomical Journal. 140 (3): 770–784. Bibcode:2010AJ....140..770T. doi:10.1088/0004-6256/140/3/770. S2CID 3006566.
  6. ^ a b Hicks, M.; Rhoades, H.; Somers, J.; Grote, M. (July 2009). "Broad-Band Photometry of the Potenially Hazardous Asteroid 2002 LV". The Astronomer's Telegram. 2134 (2134): 1. Bibcode:2009ATel.2134....1H.
  7. ^ a b Warner, Brian D. (January 2017). "Near-Earth Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2016 July-September". The Minor Planet Bulletin. 44 (1): 22–36. Bibcode:2017MPBu...44...22W. ISSN 1052-8091. PMC 7243971. PMID 32455389.
  8. ^ a b Thomas, Cristina A.; Emery, Joshua P.; Trilling, David E.; Delbó, Marco; Hora, Joseph L.; Mueller, Michael (January 2014). "Physical characterization of Warm Spitzer-observed near-Earth objects". Icarus. 228: 217–246. arXiv:1310.2000. Bibcode:2014Icar..228..217T. doi:10.1016/j.icarus.2013.10.004. S2CID 119278697.
  9. ^ "JPL Small-Body Database Browser: 385343 (2002 LV)". Jet Propulsion Laboratory. Retrieved 20 April 2018.
  10. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 20 April 2018.

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