速报：地面重新拍到Comet C2014 E 2 Jacques，并且有扩散的弥漫尾
7月11日04h25m UT，Gerald Rhemann拍摄于纳米比亚 Tivoli农场， ASA12“/F 3.6天体照相仪 ，FLI ML8300摄像头，曝光时间： 3x3 binning 2x 60 sec。继续等待，看亮度如何。 8月大概的亮度会是多少？8月双筒应该就能看了 细节很丰富啊！ 红圈的这段时间不知道彗星发生了些什么事件，这是太阳观测飞船和地面观测的空白区，但显然彗星至少又恢复了原始的活度，从地面拍到的照片看，目前亮度可能在5-6等并且有明显的扩散彗尾，今天彗星正在掠过金星，从这个亮度看，金星上看到的雅克彗星在-3到-4等！！彗星将很快拉开和太阳的角距，成为北半球的极佳观测目标。
Ephemeris of comet C/2014 E2 Jacques
日期时间Top R.A.Top DecR (AU)距离El ? Mag
11 七月 201400:00:0005h 42m 12.2s+24°21' 15"0.68751.505622.55.3
12 七月 201400:00:0005h 40m 38.1s+24°48' 16"0.69321.488123.85.3
13 七月 201400:00:0005h 39m 03.6s+25°15' 51"0.69951.470125.25.3
14 七月 201400:00:0005h 37m 28.6s+25°44' 04"0.70631.451426.55.3
15 七月 201400:00:0005h 35m 53.1s+26°12' 55"0.71371.432227.85.4
16 七月 201400:00:0005h 34m 16.8s+26°42' 28"0.72151.412529.15.4
17 七月 201400:00:0005h 32m 39.7s+27°12' 46"0.72981.392330.55.4
18 七月 201400:00:0005h 31m 01.6s+27°43' 51"0.73861.371631.85.5
19 七月 201400:00:0005h 29m 22.3s+28°15' 46"0.74781.350433.25.5
20 七月 201400:00:0005h 27m 41.5s+28°48' 36"0.75741.328834.55.6
21 七月 201400:00:0005h 25m 59.1s+29°22' 23"0.76751.306935.95.6
22 七月 201400:00:0005h 24m 14.7s+29°57' 11"0.77781.284637.35.6
23 七月 201400:00:0005h 22m 27.9s+30°33' 06"0.78851.261938.65.7
24 七月 201400:00:0005h 20m 38.5s+31°10' 11"0.79961.238940.05.7
25 七月 201400:00:0005h 18m 45.9s+31°48' 32"0.81091.215741.45.8
26 七月 201400:00:0005h 16m 49.8s+32°28' 13"0.82261.192242.85.8
27 七月 201400:00:0005h 14m 49.6s+33°09' 20"0.83451.168544.25.9
28 七月 201400:00:0005h 12m 44.6s+33°51' 59"0.84661.144645.75.9
29 七月 201400:00:0005h 10m 34.2s+34°36' 16"0.85901.120547.15.9
30 七月 201400:00:0005h 08m 17.7s+35°22' 19"0.87171.096348.66.0
31 七月 201400:00:0005h 05m 54.1s+36°10' 14"0.88451.072050.06.0
01 八月 201400:00:0005h 03m 22.5s+37°00' 08"0.89751.047651.56.0
02 八月 201400:00:0005h 00m 41.8s+37°52' 10"0.91061.023253.16.1
03 八月 201400:00:0004h 57m 50.7s+38°46' 28"0.92400.998854.66.1
04 八月 201400:00:0004h 54m 47.6s+39°43' 11"0.93750.974456.26.2
05 八月 201400:00:0004h 51m 30.9s+40°42' 26"0.95110.950157.86.2
06 八月 201400:00:0004h 47m 58.5s+41°44' 23"0.96490.926059.46.2
07 八月 201400:00:0004h 44m 08.2s+42°49' 11"0.97880.902061.16.3
08 八月 201400:00:0004h 39m 57.1s+43°56' 57"0.99280.878262.86.3
09 八月 201400:00:0004h 35m 22.0s+45°07' 49"1.00680.854764.56.3
10 八月 201400:00:0004h 30m 19.0s+46°21' 53"1.02100.831566.36.3
11 八月 201400:00:0004h 24m 43.5s+47°39' 13"1.03530.808768.26.3
12 八月 201400:00:0004h 18m 30.0s+48°59' 49"1.04970.786470.16.4
13 八月 201400:00:0004h 11m 31.8s+50°23' 38"1.06410.764672.06.4
14 八月 201400:00:0004h 03m 40.8s+51°50' 29"1.07860.743374.06.4
15 八月 201400:00:0003h 54m 47.5s+53°20' 05"1.09310.722876.06.4
16 八月 201400:00:0003h 44m 40.1s+54°51' 53"1.10770.703078.16.5
17 八月 201400:00:0003h 33m 04.8s+56°25' 09"1.12240.684080.36.5
18 八月 201400:00:0003h 19m 45.4s+57°58' 43"1.13700.666082.56.5
19 八月 201400:00:0003h 04m 23.2s+59°31' 01"1.15180.649284.86.5
20 八月 201400:00:0002h 46m 38.5s+60°59' 56"1.16650.633487.16.5
21 八月 201400:00:0002h 26m 12.0s+62°22' 37"1.18130.619089.56.5
22 八月 201400:00:0002h 02m 48.9s+63°35' 36"1.19610.606091.96.6
23 八月 201400:00:0001h 36m 25.1s+64°34' 45"1.21100.594694.36.6
24 八月 201400:00:0001h 07m 14.7s+65°15' 36"1.22580.584896.76.7
25 八月 201400:00:0000h 35m 56.3s+65°33' 57"1.24070.576899.16.7
26 八月 201400:00:0000h 03m 32.8s+65°26' 37"1.25560.5706101.56.7
27 八月 201400:00:0023h 31m 21.7s+64°52' 12"1.27050.5664103.86.8
28 八月 201400:00:0023h 00m 37.7s+63°51' 23"1.28540.5642105.96.9
29 八月 201400:00:0022h 32m 17.4s+62°26' 44"1.30030.5641108.06.9
30 八月 201400:00:0022h 06m 52.0s+60°42' 02"1.31520.5660109.97.0
31 八月 201400:00:0021h 44m 29.5s+58°41' 40"1.33020.5700111.77.1
01 九月 201400:00:0021h 25m 02.0s+56°29' 56"1.34510.5760113.27.2
02 九月 201400:00:0021h 08m 12.9s+54°10' 46"1.36000.5840114.67.3
03 九月 201400:00:0020h 53m 42.4s+51°47' 31"1.37490.5939115.77.4
04 九月 201400:00:0020h 41m 11.0s+49°22' 58"1.38980.6057116.67.5
05 九月 201400:00:0020h 30m 20.7s+46°59' 18"1.40470.6192117.37.6
06 九月 201400:00:0020h 20m 56.0s+44°38' 13"1.41960.6344117.87.7
07 九月 201400:00:0020h 12m 43.7s+42°20' 58"1.43450.6511118.17.8
08 九月 201400:00:0020h 05m 32.7s+40°08' 26"1.44930.6692118.27.9
Stellarium模拟了一下，8月1日3：20分左右高度角大概35度。6.0等应该差不多了。谢谢提供的星历表 C/2014 E 2 Jacques近期照片：
Michael Jäger
July 15 UT 1.206x50sec UV/IR and 6x120sec red
8"/2.8 FLI 8300
Jean-Gabriel Bosch
2014 Jul 15 09h59 UT
T400RC SpaceObs A.Maury
新浪微博“银汉繁星”
“今天凌晨，独自行走5里路，来到视野开阔的海边，首次成功拍摄了刚刚过近日点的彗星C/2014 E2（Jacques），这也是个人拍摄到的第四颗彗星。明亮的彗星在单张照片就已经可见，并带有淡淡的绿色，凝结度较高，彗发直径约2.5角分。”
最小角距离 C/2014 E2 Jacques and TYC 1859-1470-1（ 金牛座 beta ）
C/2014 E2 Jacques
2014 Jul. 14.37 UT: m= 6.0:, Dia=2', DC=6,...7cm R (28x)...Alexandre Amorim (Florianopolis,Brazil)
C/2014E2 Jacques
Total magnitude and coma diameter estimates:
2014 Jul.16.37UT, 6.0, 2' (W. Souza, Sao Paulo, Brazil, 20x80B); 继续等待好的天气。 现在用普通双筒望远镜能看到否？
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