| 词条 | (7341) 1991 VK |
| 释义 |
| minorplanet = yes | background = #FFC2E0 | name = (7349) 1991 VK | discovery_ref = | discoverer = Eleanor F. Helin, Kenneth J. Lawrence Palomar Observatory | discovered = 1 November 1991 | mpc_name = | mp_category = Apollo NEO, PHA | orbit_ref = | epoch = 13 January 2016 (JD 2457400.5) | aphelion = {{Convert|2.7751|AU|Gm|abbr=on|lk=on}} (Q) | perihelion = {{Convert|0.90889|AU|Gm|abbr=on}} (q) | semimajor = {{Convert|1.8420|AU|Gm|abbr=on}} (a) | eccentricity = 0.50657 (e) | period = 2.50 yr (913.12 d) | inclination = 5.4193° (i) | asc_node = 294.87° (Ω) | mean_anomaly = 216.02° (M) | arg_peri = 173.37° (ω) | dimensions = 1.4 km[4] | albedo = | magnitude = | abs_magnitude = 16.7 | mean_motion = {{Deg2DMS|0.39425|sup=ms}} / day (n) | rotation = {{Convert|4.2096|h|d|abbr=on|lk=on}} | observation_arc = 7974 days (21.83 yr) | uncertainty = 0 }}(7341) 1991 VK is a near-Earth minor planet in the Apollo group. It was discovered by Eleanor F. Helin and Kenneth J. Lawrence at the Palomar Observatory in San Diego County, California, on November 1, 1991. It is listed as a potentially hazardous object. Every 5 years (from 1946 through 2091) the asteroid makes a close approach to the Earth.[8] The most recent close approach to Earth was on Jan 25, 2017; the next close approach will be on Jan 25, 2022 at a distance of {{convert|0.064|AU|km mi|abbr=on|lk=on}}.[8] See also
References1. ^1 2 {{cite web |quote=2012-06-07 last obs |title=JPL Close-Approach Data: 7341 (1991 VK) |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=7341;cad=1#cad |accessdate=2012-06-13}} [1][2]2. ^1 {{cite web |title = ( 7341) 1991 VK |publisher = The Near-Earth Asteroids Data Base at E.A.R.N |url = http://earn.dlr.de/nea/007341.htm |accessdate = 2012-06-16 |archive-url = https://web.archive.org/web/20120609165347/http://earn.dlr.de/nea/007341.htm# |archive-date = 2012-06-09 |dead-url = yes |df = }} }} External links
6 : Apollo asteroids|Discoveries by Eleanor F. Helin|Discoveries by Kenneth J. Lawrence|Potentially hazardous asteroids|Sq-type asteroids (SMASS)|Astronomical objects discovered in 1991 |
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