Astronomy:(385343) 2002 LV
| Discovery[1] | |
|---|---|
| Discovered by | LINEAR |
| Discovery site | Lincoln Lab's ETS |
| Discovery date | 1 June 2002 |
| Designations | |
| (385343) 2002 LV | |
| 2002 LV | |
| Minor planet category | Apollo · NEO · PHA[1][2] |
| Orbital characteristics[2] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 14.74 yr (5,382 d) |
| |{{{apsis}}}|helion}} | 3.7146 AU |
| |{{{apsis}}}|helion}} | 0.9138 AU |
| 2.3142 AU | |
| Eccentricity | 0.6051 |
| Orbital period | 3.52 yr (1,286 d) |
| Mean anomaly | 148.86° |
| Mean motion | 0° 16m 48s / day |
| Inclination | 29.541° |
| Longitude of ascending node | 132.20° |
| 224.20° | |
| Earth MOID | 0.0071 AU (2.766 LD) |
| Physical characteristics | |
| Mean diameter | 1.359±0.555 km[3] 1.42 km (calculated)[4] 1.73 km[5] |
| Rotation period | 6.195±0.012 h[lower-alpha 1] 6.20±0.01 h[6][7] |
| Geometric albedo | 0.15[5] 0.20 (assumed)[4] 0.2158±0.4209[3] |
| Sr[8] · S (assumed)[4] | |
| Absolute magnitude (H) | 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]
| 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 | 15.30 | 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≈6400 km). (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 ({{{1}}}).[lower-alpha 1] 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 ({{{1}}}).[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
- ↑ 1.0 1.1 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
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "385343 (2002 LV)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=385343. Retrieved 20 April 2018.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 "JPL Small-Body Database Browser: 385343 (2002 LV)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2385343. Retrieved 20 April 2018.
- ↑ 3.0 3.1 3.2 3.3 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. doi:10.3847/1538-3881/aa89ec. Bibcode: 2017AJ....154..168M.
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 "LCDB Data for (385343)". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=385343%7C. Retrieved 20 April 2018.
- ↑ 5.0 5.1 5.2 5.3 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". The Astronomical Journal 140 (3): 770–784. doi:10.1088/0004-6256/140/3/770. Bibcode: 2010AJ....140..770T. https://authors.library.caltech.edu/19716/1/Trilling2010p11217Astron_J.pdf.
- ↑ 6.0 6.1 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.
- ↑ 7.0 7.1 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. ISSN 1052-8091. PMID 32455389. Bibcode: 2017MPBu...44...22W.
- ↑ 8.0 8.1 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. doi:10.1016/j.icarus.2013.10.004. Bibcode: 2014Icar..228..217T.
- ↑ "JPL Small-Body Database Browser: 385343 (2002 LV)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2385343;cad=1#cad. Retrieved 20 April 2018.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. Retrieved 20 April 2018.
External links
- List of the Potentially Hazardous Asteroids (PHAs), Minor Planet Center
- PHA Close Approaches To The Earth, Minor Planet Center
- Asteroid Lightcurve Database (LCDB), query form (info )
- (385343) 2002 LV at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- (385343) 2002 LV at ESA–space situational awareness
- (385343) 2002 LV at the JPL Small-Body Database
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