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Images of 73P-M/N, and possible new complex fragments.

Apr 9th

@叶夜速写 | 218次浏览(views)

Hello all,

Here shows two images of fragment M and N, and a possible new complex fragments. All images are photographed by the Lulin One-meter Telescope (LOT), on 180 seconds x 4 each.

full pixel at http://ccn.lamost.org/test/73p_flagment_2.jpg

This is the image on April 4, fragment M could be seen. And on northwest we detect a new fragment, the seeing was very good that night, we found the new fragment might be a double one.

     QY6455H 1C2006 04 04.64763 14 31 34.227+22 07 38.26         21.33R      D35
     QY6455H 1C2006 04 04.65061 14 31 34.373+22 07 39.63         21.74R      D35
     QY6455H 1C2006 04 04.65358 14 31 34.594+22 07 44.17         21.60R      D35
     QY6455H 1C2006 04 04.65655 14 31 34.885+22 07 47.71         21.97R      D35
     QY6455I 1C2006 04 04.64763 14 31 34.650+22 07 37.14         21.65R      D35
     QY6455I 1C2006 04 04.65061 14 31 34.744+22 07 41.25         21.88R      D35
     QY6455I 1C2006 04 04.65358 14 31 35.021+22 07 45.12         21.80R      D35

full pixel at http://ccn.lamost.org/test/73p_flagment_3.GIF

And here is the image of April 7, we could detect fragment M and N, but the possible fragment detected on April 4 was not recovered. Instead, on southeast of fragment M we detect another new fragment.

     QY64846 1C2006 04 07.62041 14 35 48.058+23 10 01.76         20.52R      D35
     QY64846 1C2006 04 07.62329 14 35 48.108+23 10 03.18         20.30R      D35
     QY64846 1C2006 04 07.62626 14 35 48.435+23 10 08.78         19.92R      D35
     QY64846 1C2006 04 07.62926 14 35 48.724+23 10 12.18         20.23R      D35

I have checked the observations from Mt.Lemmon, none of the above two fragments are found on April 2, but in the observations of April 7 I found this object, which is undesigned too:

      6GC355F C2006 04 07.46400 14 35 21.86 +23 07 44.6          20.4 V      G96
      6GC355F C2006 04 07.47123 14 35 22.28 +23 07 55.3                      G96
      6GC355F C2006 04 07.47855 14 35 23.00 +23 08 05.1                      G96
      6GC355F C2006 04 07.48586 14 35 23.46 +23 08 13.3                      G96

Orbit calculations showed the three objects are quite complex. If QY6455H/I = QY64846, this fragment's orbit would be:

QY6455H
   Perihelion 2006 Jun 7.954565 TT
Epoch 2006 Apr 8.0 TT = JDT 2453833.5                  Ye
M 342.84722              (2000.0)            P               Q
n   0.28140259     Peri. 215.24150      0.02115394      0.98502569
a   2.3063080      Node    56.55703     -0.86376467      0.10418800
e   0.6147198      Incl.   11.83270     -0.50345118     -0.13736533
P   3.50           H   22.0           G   0.15      q 0.8885747
From 7 observations 2006 Apr. 4-7;   RMS error 1.195 arcseconds

But if QY6455H/I = 6GC355F (I trend to believe this linkage), we could still get a reasonable orbit (though, not as good as the above linkage):

QY6455H
   Perihelion 2006 Jun 7.684741 TT
Epoch 2006 Apr 7.0 TT = JDT 2453832.5                  Ye
M 337.50455              (2000.0)            P               Q
n   0.36468403     Peri. 233.95758      0.11289585      0.98038796
a   1.9402523      Node    43.42310     -0.81920559      0.18384256
e   0.5785913      Incl.   13.59178     -0.56227815     -0.07100244
P   2.70 /987.14d H   22.9           G   0.15      q 0.8176391
From 7 observations 2006 Apr. 4-7;   RMS error 1.041 arcseconds

So I'm quite confuse about which is right. I will try to do a third-night observation as soon as possible, but now seems Lulin is going to experience several cloudy nights. Could anyone do a confirmation for this object?

Regards,

Quanzhi

7Timer!s update (April 9)

Apr 9th

@English Island | 131次浏览(views)

0条评论(comment)

Hello all,

Finally I have time to process our requests!

Adds 7Timer!s:

云南省嵩明县阿子营乡
United Kingdom Birmingham
Australia Hobart
Spain Vitoria [I have correct the timezone from +2 to +1]
Malaysia Kota Kinabalu
Lithuania Vilnius
United Kingdom Devizes
Netherlands Emmen
United Kingdom Horndean
United Kingdom Brynllefrith Observatory CF38
Italy Bologna
United Kingdom Retford
台湾地区墾丁
Argentina Villa La Angostura
USA Groton, NY

Correction:

山东省海阳市

Problem requests:

United Kingdom Loftus [Inaccurate longnitude, please check it again.]
上海市南汇 [已存在]
Brazil Macei贸 [Please do not use non-eng word]
山东省天泰观象台 [已存在]

Okay, that's all. As I'm going to have another important exam (or called NMT Sim II), the next time of update will be around April 30.

Now I have something new to annouce, I may post a new thread here...

Quanzhi

诗四首... 欢迎大家拍砖

Apr 8th

@吟诗作赋 | 150次浏览(views)

0条评论(comment)

题大黄书/五绝

晓看花草间，

木棉与轩辕。

娇莺啼不住，

又是四月天。

自观/七绝

莫因淡云没顶峰，

即言此山惟有空。

东风一夜吹清静，

朝阳泻下一片红。

初夏高楼倚望/七绝

木棉飞降衬桃花，

蛙声直问春或夏。

我知楼下遍红颜，

偕同碧天与白沙。

春题/七古

细雨浮芽踏如毯，

淡云飞去蔽青山。

一夜卧听芭蕉暖，

燕雀惊起问早安。

路上行人短装前，

树下青草已现青。

却嫌目光不足快，

丛中尚有碧花莺。

猫上窗台好观日，

一年之初喜计事。

鱼畅池中庆舒适，

一去三月是夏至。

人生得意易寻否，

为何不饮太白酒？

莫在乐时强作忧，

四季不变只是秋。

LUSSEC 8: Orbit Update

Apr 8th

@English Island | 178次浏览(views)

0条评论(comment)

NEW DISCOVERIES

#LUSS Designation Discovered date (UT) Discoverer

16 2006 GE April 1, 2006 T. C. Yang, Q. Ye

17 2006 GF April 1, 2006 T. C. Yang, Q. Ye

18 2006 GG April 1, 2006 T. C. Yang, Q. Ye

19 2006 GH April 1, 2006 T. C. Yang, Q. Ye

20 2006 GJ April 1, 2006 T. C. Yang, Q. Ye

21 2006 GK April 1, 2006 T. C. Yang, Q. Ye

22 2006 GM April 1, 2006 T. C. Yang, Q. Ye

23 2006 GN April 1, 2006 T. C. Yang, Q. Ye

24 2006 GO April 1, 2006 T. C. Yang, Q. Ye

25 2006 FV37 March 30, 2006 T. C. Yang, Q. Ye

26 2006 GF2 April 3, 2006 H. C. Lin, Q. Ye

27 2006 GR2 April 4, 2006 H. C. Lin, Q. Ye

RECOVERIES

Private-assigned code Discovered date (UT) Prove to be

QY6455M April 4, 2006 73P-L

QY64552 April 4, 2006 73P-G

QY6455F April 4, 2006 73P-M

QY64458 April 3, 2006 73P-R

QY64453 April 3, 2006 73P-P

QY6445A April 3, 2006 73P-N

QY6645B April 3, 2006 73P-M

QY64749 April 6, 2006 73P-N

QY64759 April 6, 2006 73P-R

NEO CONFIRMATION OBSERVATIONS

Observer-assigned code Designation Reference

6GAEFF2 2006 GD MPEC 2006-G15

6G0B7DA 2006 GQ2 MPEC 2006-G26

CREDIT CHANGE OBJECTS

#LUSS Designation Principal

15 2006 FX35 2002 GZ67

18 2006 GG 2005 BM46

25 2006 FV37 2006 GZ67

One-opposition orbits publish

#LUSS Designation Reference Type Arc

10 2006 FR35 MPEC 2006-G11 Main-belt I 4 X

16 2006 GE MPEC 2006-G23 Flora 7 X

17 2006 GF MPEC 2006-G17 Main-belt I 3 X

One-opposition orbits update

#LUSS Designation Reference Arc

4 2006 EK67 MPEC 2006-G22 18 X

3 2006 EL67 MPEC 2006-G22 22 X

5 2006 FA MPEC 2006-G22 35 X

No 1-nighter wait for confirmation at this time.

12 possible new flagments of Comet 73P wait for confirmations at this time.

Note: In the future "RECOVERIES" section will only contains those which are important.

Quanzhi Ye

7Timer! Update and annouce of delay

Apr 3rd

@叶夜速写 | 139次浏览(views)

0条评论(comment)

Hello all,

Update 7Timer!s

Mexico City, Mexico
北京平谷
贵州安龙

I'm sorry to annouce the delay of other requests -- I'm busy these time, the sim-exam result outs, and I have to spent much time on it. Certainly, LUSS is another case.

However, I'll process all the requests on the next Sunday -- April 9.

I'm very sorry about this. However, if your're hurry to use, please let me know, I'll try my best to process your request as quickly as possible.

And the up three users: your 7Timer! will be up to date today -- around 12hUT.

Regards,

Quanzhi

LUSSEC 7: Orbit Update

Apr 1st

@English Island | 163次浏览(views)

0条评论(comment)

NEW DISCOVERIES

#LUSS Designation Discovered date (UT) Discoverer

6 2006 FN35 March 28, 2006 T. C. Yang, Q. Ye

7 2006 FO35 March 29, 2006 T. C. Yang, Q. Ye

8 2006 FP35 March 29, 2006 T. C. Yang, Q. Ye

9 2006 FQ35 March 29, 2006 T. C. Yang, Q. Ye

10 2006 FR35 March 29, 2006 T. C. Yang, Q. Ye

11 2006 FS35 March 29, 2006 T. C. Yang, Q. Ye

12 2006 FT35 March 29, 2006 T. C. Yang, Q. Ye

13 2006 FU35 March 29, 2006 T. C. Yang, Q. Ye

14 2006 FW35 March 30, 2006 T. C. Yang, Q. Ye

15 2006 FX35 March 30, 2006 T. C. Yang, Q. Ye

RECOVERIES

Private-assigned code Discovered date (UT) Prove to be

QY63V27 March 30, 2006 2006 DH212

QY63TEE March 28, 2006 2001 XQ191

QY63U91 March 29, 2006 2000 RT20

QY63UB8 March 29, 2006 2003 SM29

QY63VDK/V3A March 30, 2006 2001 XH166

One-opposition orbits update

#LUSS Designation Reference Type Arc

3 2006 EL67 MPEC 2006-G02 Main-belt IIb 20 X

6 2006 FN35 MPEC 2006-G02 Hungaria 21 X

8 2006 FP35 MPEC 2006-G02 Main-belt I 4 X

Quanzhi Ye

LUSSEC 6: Orbit Update

Mar 31st

@English Island | 259次浏览(views)

0条评论(comment)

RECOVERIES

Private-assigned code Discovered date (UT) Prove to be

QY63C3f Mar.12, 2006 2006 FS24

QY63UDB Mar.30, 2006 2002 GW84

QY63TEA Mar.29, 2006 2000 DN77

QY63TF4 Mar.29, 2006 2005 AA57

QY63TED Mar.29, 2006 2006 DH212

COMET CONFIRMATION OBSERVATIONS

Observer-assigned code Designation Reference

SW40W9 P/2006 F4 (Spacewatch) MPEC 2006-F53

One-opposition orbits update

#LUSS Designation Reference Type Arc

4 2006 EK67 MPEC 2006-F52 Maria 18 X

There are 14 1-nighters wait for confirmations at this time.

There are 2 2-nighters wait for designations at this time.

Quanzhi Ye

LUSSEC 5: 2006 EJ67

Mar 30th

@English Island | 288次浏览(views)

0条评论(comment)

Hello all,

I'm sorry to annouce the failure on recover 2-night object 2006 EJ67, which was discovered by Chi Sheng and me two weeks ago.

On March 28/29 and 29/30, the Lulin observer Ting Chang and me have been tried to recover the ~mag20.6 object, but because the object has passed the opposition point and, does not has a good orbit, we could not find it around 27'x27' of the nominal.

We had been hope the big surveies could picked it up in the past two weeks, but seems it's not bright enough to be picked up.

At the same time, I have a good news to annouce. Object 2006 EK67 is now a 4-night object, as Mt.Lemmon and ourselves have added two night more observations. The update orbit will appear on the next batch of Orbit Update (previously called News Update).

Best regards,

Quanzhi