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主題: C/2023 H2 (Lemmon) 作者: peter 於 2023-08-31 21:15:09 C/2023 H2 (Lemmon)
http://astro.vanbuitenen.nl/comet/2023H2 http://www.aerith.net/comet/catalog/2023H2/2023H2.html https://www.facebook.com/photo.php?fbid=10160593747227931&set=p.10160593747227931&type=3 (https://scontent.ftpe8-4.fna.fbcdn.net/v/t39.30808-6/367495112_10160593747217931_3588915508513703247_n.jpg?_nc_cat=102&ccb=1-7&_nc_sid=6a0516&_nc_ohc=qpzrkhx3ESsAX9KS9ou&_nc_ht=scontent.ftpe8-4.fna&oh=00_AfAqM6yhgX7h4jz5txrZP-eDH2N52_26F9sQ7XVGjlU3vQ&oe=64F64200) 主題: 回覆： C/2023 H2 (Lemmon) 作者: peter 於 2023-10-11 16:27:32 C/2023 H2 (Lemmon)目前多个报告亮度9等左右，比预报亮3等，但是凝聚度比较低，彗发大而弥散，将于11月10日前到达0.19AU的近地点，未来近遇较亮深空天体的情况如下，可供拍摄参考： 1.最小角距离 C/2023 H2 Lemmon and M106 日期 (UT) 角距 赤纬 日彗角距 2023 十月 14 01:23 0°27' 35" +46°45' 56.1° 2.最小角距离 C/2023 H2 Lemmon and M51 日期 (UT) 角距 赤纬 日彗角距 2023 十月 28 21:14 2°48' 45" +49°52' 63.8° 3.最小角距离 C/2023 H2 Lemmon and M101 日期 (UT) 角距 赤纬 日彗角距 2023 十月 31 18:58 4°09' 05" +50°05' 64.4° 4.最小角距离 C/2023 H2 Lemmon and M13 日期 (UT) 角距 赤纬 日彗角距 2023 十一月 07 18:26 3°58' 56" +39°44' 63.0° 5.最小角距离 C/2023 H2 Lemmon and M92 日期 (UT) 角距 赤纬 日彗角距 2023 十一月 07 23:29 5°23' 21" +38°47' 63.0° https://weibo.com/1029143002/Nm6Vu9kcz?type=repost 主題: 回覆： C/2023 H2 (Lemmon) 作者: peter 於 2023-10-16 08:40:09 https://www.facebook.com/photo/?fbid=2270788023107235&set=gm.6411004722341201&idorvanity=455870324521367
Mitsunoi Tsumura C/2023 H2 & M106 主題: 回覆： C/2023 H2 (Lemmon) 作者: peter 於 2023-11-03 08:23:17 C/2023 H2 (Lemmon) Comet H2 Lemmon in November 6-Crosses into the constellation Hercules. 7-Passes near the +4.2 magnitude star Phi Herculis. 8-Photo Op: Passes near the +4.2 magnitude star Sigma Herculis, and 4 degrees from the globular cluster Messier 13 and 3 degrees from the globular cluster Messier 92. 9-Passes just 10’ from the +3rd magnitude star Pi Herculis. 10-Passes near the +3.7 magnitude star Xi Herculis and passes 0.19 AU from the Earth, perhaps reaching a peak brightness of +5 magnitude. 11-Passes near +4 magnitude star Zeta Aquilae and the +3rd magnitude star Epsilon Aquilae, and moves in to the constellation Aquila. 12-Crosses the galactic plane southward. 13-Crosses the celestial equator southward. 15-Crosses into the constellation Capricornus. 17-Crosses the plane ecliptic southward. 19-The 45% illuminated, waxing crescent Moon passes less than 4 degrees from the comet. 20-Nicks the corner of the constellation Microscopium. 21-Crosses into the constellation Piscis Austrinus. 29-Crosses into the constellation Grus. https://www.universetoday.com/164011/comet-h2-lemmon-brightens-in-early-november-ahead-of-expectations/ |