TF85899 = P 2012 F5 GIBBS 

   


Queue : +/- 7.40'

      
 

Animation 2x (15x120s)




Animation 2 x (20x120s)

M.P.E.C. 2012-F87                                Issued 2012 Mar. 25, 23:08 UT

The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.

Prepared using the Tamkin Foundation Computer Network

MPC@CFA.HARVARD.EDU
URL http://www.minorplanetcenter.net/ ISSN 1523-6714


COMET P/2012 F5 (GIBBS)

Observations:
PK12F050 C2012 03 22.28771 11 15 10.24 -05 33 32.0 rEF087G96
PK12F050 C2012 03 22.28943 11 15 10.20 -05 33 31.5 rEF087G96
PK12F050 C2012 03 22.29118 11 15 10.09 -05 33 30.7 rEF087G96
PK12F050 C2012 03 22.29289 11 15 10.05 -05 33 29.9 rEF087G96
PK12F050 C2012 03 22.39053 11 15 05.89 -05 32 47.6 18.1 TrEF087G96
PK12F050 C2012 03 22.39427 11 15 05.78 -05 32 46.3 rEF087G96
PK12F050 C2012 03 22.39784 11 15 05.62 -05 32 44.7 rEF087G96
PK12F050 C2012 03 22.40141 11 15 05.46 -05 32 42.9 rEF087G96
PK12F050 KC2012 03 23.02066 11 14 40.30 -05 28 15.9 tEF087204
PK12F050 KC2012 03 23.05355 11 14 38.94 -05 28 01.9 18.5 TtEF087204
PK12F050 KC2012 03 23.12235 11 14 36.31 -05 27 25.5 uEF087I48
PK12F050 KC2012 03 23.13924 11 14 35.60 -05 27 18.7 uEF087I48
PK12F050 KC2012 03 23.16444 11 14 34.55 -05 27 09.2 uEF087I48
PK12F050 C2012 03 23.30726 11 14 28.89 -05 26 12.4 19.1 ToEF087H01
PK12F050 C2012 03 23.31560 11 14 28.54 -05 26 08.9 18.9 ToEF087H01
PK12F050 C2012 03 23.32265 11 14 28.24 -05 26 06.0 18.7 ToEF087H01
PK12F050 C2012 03 23.33172 11 14 27.86 -05 26 01.9 18.7 ToEF087H01
PK12F050 KC2012 03 23.97165 11 14 02.26 -05 21 25.6 uEF087J95
PK12F050 KC2012 03 23.98207 11 14 01.81 -05 21 21.2 18.8 TuEF087J95
PK12F050 SC2012 03 23.99691 11 14 01.30 -05 21 15.2 uEF087J95
PK12F050 FC2012 03 24.02271 11 14 00.36 -05 20 59.2 19.0 ToEF087I47
PK12F050 FC2012 03 24.02753 11 14 00.17 -05 20 56.1 19.0 ToEF087I47
PK12F050 C2012 03 24.24596 11 13 51.37 -05 19 26.2 18.9 ToEF087H01
PK12F050 {C2012 03 24.24980911 13 51.226-05 19 24.17 19.2 TtEF087695
PK12F050 {C2012 03 24.25406811 13 51.088-05 19 23.30 19.3 TtEF087695
PK12F050 {C2012 03 24.25832811 13 50.885-05 19 21.15 19.0 TtEF087695
PK12F050 C2012 03 24.26095 11 13 50.76 -05 19 19.8 18.8 ToEF087H01
PK12F050 C2012 03 24.27512 11 13 50.17 -05 19 13.7 19.0 ToEF087H01
PK12F050 C2012 03 24.28358 11 13 49.86 -05 19 10.1 19.0 ToEF087H01
PK12F050 {C2012 03 24.30373811 13 49.010-05 19 01.61 19.2 TtEF087695
PK12F050 {C2012 03 24.30557911 13 48.942-05 19 00.46 19.5 TtEF087695
PK12F050 {C2012 03 24.30741911 13 48.874-05 18 59.69 19.7 TtEF087695
PK12F050 C2012 03 24.52087 11 13 40.49 -05 17 21.2 oEF087E23
PK12F050 C2012 03 24.53993 11 13 39.56 -05 17 11.3 oEF087E23
PK12F050 KC2012 03 25.03043 11 13 20.26 -05 13 46.9 19.1 ToEF087C10
PK12F050 KC2012 03 25.04826 11 13 19.68 -05 13 40.6 uEF087J95
PK12F050 KC2012 03 25.05540 11 13 19.25 -05 13 36.0 18.8 ToEF087C10
PK12F050 KC2012 03 25.05764 11 13 19.38 -05 13 36.3 18.9 TuEF087J95
PK12F050 KC2012 03 25.28733 11 13 10.14 -05 11 54.7 19.2 TuEF087H36
PK12F050 KC2012 03 25.29203 11 13 09.92 -05 11 52.5 18.9 TuEF087H36
PK12F050 KC2012 03 25.30614 11 13 09.33 -05 11 46.4 19.6 TuEF087H36
PK12F050 |C2012 03 25.34673 11 13 07.75 -05 11 29.0 cEF087H06
PK12F050 |C2012 03 25.34855 11 13 07.54 -05 11 27.8 19.3 TcEF087H06
PK12F050 KC2012 03 25.81848 11 12 49.61 -05 08 05.0 18.9 ToEF087B90
PK12F050 KC2012 03 25.84296 11 12 48.75 -05 07 56.1 18.7 ToEF087B90

Observer details:
204 Schiaparelli Observatory. Observer L. Buzzi. 0.60-m f/4.64 reflector
+ CCD.
695 Kitt Peak. Observer T. Vorobjov. 1.3-m f/13 Cassegrain + CCD.
B90 Malina River Observatory, Povoletto. Observers E. Guido, N. Howes,
G. Sostero. 0.3-m reflector + CCD.
C10 Maisoncelles. Observer J. F. Soulier. 0.30-m f/4 Newtonian reflector
+ CCD.
E23 Arcadia. Observer A. Hidas. 0.35-m Schmidt-Cassegrain + CCD.
G96 Mt. Lemmon Survey. Observer A. R. Gibbs. Measurers J. D. Ahern,
E. C. Beshore, A. Boattini, A. R. Gibbs, A. D. Grauer, R. E. Hill,
R. A. Kowalski, S. M. Larson, R. H. McNaught. 1.5-m reflector + CCD.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 reflector + CCD.
H06 RAS Observatory, Mayhill. Observer H. Sato. 0.51-m f/6.8 astrograph
+ CCD + f/4.5 focal reducer.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m reflector + CCD.
I47 Pierre Auger Observatory, Malargue. Observers M. Masek, J. Cerny, J. Ebr,
M. Prouza, P. Kubanek, M. Jelinek. Measurer M. Masek. 0.3-m f/10
reflector + CCD.
I48 Observatorio El Catalejo, Santa Rosa. Observer J. Spagnotto. 0.20-m f/5
reflector + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.

Orbital elements:
P/2012 F5 (Gibbs)
T 2010 Sept. 15.26927 TT MPC
q 1.8765223 (2000.0) P Q
n 0.18525890 Peri. 189.59248 +0.82169376 -0.56111688
a 3.0475441 Node 205.35004 +0.53713964 +0.82100508
e 0.3842510 Incl. 13.48443 +0.19052657 +0.10534945
P 5.32
From 45 observations 2012 Mar. 22-25.

Ephemeris:
P/2012 F5 (Gibbs)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2012 02 24 11 34 44.9 -08 29 52 2.6614 3.5822 154.9 6.7 19.7
...
2012 03 10 11 23 58.4 -06 59 51 2.6449 3.6245 168.9 3.0 19.7
...
2012 03 18 11 18 09.4 -06 04 16 2.6641 3.6464 169.2 2.9 19.7
...
2012 03 24 11 14 01.2 -05 21 10 2.6914 3.6626 164.7 4.1 19.8
2012 03 25 11 13 21.5 -05 13 58 2.6970 3.6653 163.8 4.4 19.8
2012 03 26 11 12 42.5 -05 06 46 2.7029 3.6680 162.9 4.6 19.8
...
2012 04 01 11 09 02.6 -04 24 01 2.7445 3.6839 156.8 6.1 19.9
...
2012 04 09 11 04 54.0 -03 29 30 2.8154 3.7047 148.2 8.2 19.9
...
2012 04 24 10 59 52.2 -02 01 02 2.9899 3.7426 132.4 11.4 20.1

Gareth V. Williams (C) Copyright 2012 MPC M.P.E.C. 2012-F87



M.P.E.C. 2012-F91 Issued 2012 Mar. 26, 17:45 UT

The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.

Prepared using the Tamkin Foundation Computer Network

MPC@CFA.HARVARD.EDU
URL http://www.minorplanetcenter.net/ ISSN 1523-6714


COMET P/2012 F5 (GIBBS)

Observations:
PK12F050 C2012 02 20.39701 11 36 33.75 -08 33 34.1 19.4 TrEF091703
PK12F050 C2012 02 20.40577 11 36 32.96 -08 33 29.3 19.2 TrEF091703
PK12F050 C2012 02 27.26794 11 32 14.78 -08 04 10.9 19.4 TrEF091703
PK12F050 C2012 02 27.27298 11 32 14.53 -08 04 08.2 19.5 TrEF091703
PK12F050 C2012 02 27.27808 11 32 14.30 -08 04 07.1 19.1 TrEF091703
PK12F050 C2012 02 27.28327 11 32 14.29 -08 04 06.0 18.5 TrEF091703
PK12F050 C2012 03 03.37152 11 28 43.94 -07 37 31.2 19.4 TrEF091703
PK12F050 C2012 03 03.37657 11 28 43.68 -07 37 28.5 18.9 TrEF091703
PK12F050 C2012 03 03.38167 11 28 43.43 -07 37 27.6 19.0 TrEF091703
PK12F050 C2012 03 03.38686 11 28 43.26 -07 37 28.2 19.5 TrEF091703
PK12F050 C2012 03 14.36182 11 20 46.35 -06 29 02.4 18.6 TrEF091703
PK12F050 C2012 03 14.36854 11 20 46.11 -06 29 00.5 17.8 TrEF091703
PK12F050 C2012 03 14.37532 11 20 45.74 -06 28 57.0 18.3 TrEF091703
PK12F050 C2012 03 14.38206 11 20 45.62 -06 28 54.8 18.6 TrEF091703
PK12F050 KC2012 03 23.80734 11 14 09.02 -05 22 37.1 19.1 ToEF091B90
PK12F050 KC2012 03 23.82387 11 14 08.42 -05 22 30.0 19.3 ToEF091B90
PK12F050 C2012 03 25.70311 11 12 53.97 -05 08 55.1 oEF091372
PK12F050 C2012 03 25.71712 11 12 53.46 -05 08 49.6 oEF091372
PK12F050 C2012 03 25.72412 11 12 53.19 -05 08 46.0 oEF091372
PK12F050 C2012 03 25.73112 11 12 52.90 -05 08 43.5 19.2 NoEF091372
PK12F050 KC2012 03 25.99198 11 12 42.92 -05 06 50.4 19.4 NoEF091C10
PK12F050 KC2012 03 26.01595 11 12 41.99 -05 06 41.8 19.1 NoEF091C10

Observer details:
372 Geisei. Observer S. Shimomoto. 0.6-m reflector + CCD.
703 Catalina Sky Survey. Observer A. R. Gibbs. Measurers J. D. Ahern,
E. C. Beshore, A. Boattini, G. J. Garradd, A. R. Gibbs, P. Tricarico,
A. D. Grauer, R. E. Hill, R. A. Kowalski, S. M. Larson, R. H. McNaught.
0.68-m Schmidt + CCD.
B90 Malina River Observatory, Povoletto. Observers E. Guido, N. Howes,
G. Sostero. 0.3-m reflector + CCD.
C10 Maisoncelles. Observer J. F. Soulier. 0.30-m f/4 Newtonian reflector
+ CCD.

Orbital elements:
P/2012 F5 (Gibbs)
Epoch 2010 Mar. 25.0 TT = JDT 2455280.5
T 2010 Mar. 20.07741 TT MPC
q 2.8726370 (2000.0) P Q
n 0.18942753 Peri. 175.81710 +0.84160033 -0.53047949
a 3.0026681 Node 216.80634 +0.49048805 +0.82934865
e 0.0433052 Incl. 9.75306 +0.22612021 +0.17542045
P 5.20
From 59 observations 2012 Feb. 20-Mar. 26, mean residual 0".8.

Residuals in seconds of arc
K122K 703 1.3+ 0.4+ K123N 204 1.0- 0.4+ K123O 695 0.1- 0.1+
K122K 703 (5.7- 3.2+) K123N I48 1.1- 1.8+ K123O 695 0.1+ 0.1+
K122R 703 1.2- 0.6- K123N I48 1.2- 1.3+ K123O E23 0.1- 1.7+
K122R 703 1.8- 0.7+ K123N I48 1.2- 0.1- K123O E23 (2.3- 3.4+)
K122R 703 2.1- 0.3+ K123N H01 0.8+ 0.2- K123P C10 0.8- 0.7+
K122R 703 1.0+ 0.1- K123N H01 0.8+ 0.3- K123P J95 0.9+ 0.6-
K1233 703 1.4+ 0.1- K123N H01 0.7+ 0.5- K123P C10 0.9- 0.7+
K1233 703 0.8+ 0.9+ K123N H01 0.6+ 0.3- K123P J95 (2.1+ 0.4-)
K1233 703 0.4+ 0.1+ K123N B90 0.8+ 0.4- K123P H36 1.9- 1.1+
K1233 703 1.3+ 2.3- K123N B90 1.9+ 0.4- K123P H36 (2.4- 1.3+)
K123E 703 1.5- 0.6+ K123N J95 0.2- 0.3+ K123P H36 (2.7- 1.3+)
K123E 703 0.6- 0.2- K123N J95 0.5- 0.2+ K123P H06 (2.3- 0.8+)
K123E 703 1.5- 0.5+ K123N J95 0.9+ 0.2- K123P H06 (4.3- 1.2+)
K123E 703 1.2+ 0.0 K123O I47 0.7- 0.9- K123P 372 0.7- 0.3+
K123M G96 0.2+ 0.3- K123O I47 0.6- 0.1+ K123P 372 0.0 0.3-
K123M G96 0.7+ 0.5- K123O H01 0.2- 0.3+ K123P 372 0.1+ 0.2+
K123M G96 0.2+ 0.5- K123O 695 0.2- 0.5+ K123P 372 0.1- 0.3-
K123M G96 0.7+ 0.4- K123O 695 0.3+ 0.5- K123P B90 (3.1- 1.0+)
K123M G96 0.0 0.2- K123O 695 0.1- 0.2- K123P B90 1.4- 0.6-
K123M G96 0.7+ 0.6- K123O H01 0.1- 0.2+ K123P C10 0.5- 0.6+
K123M G96 0.5+ 0.5- K123O H01 0.2- 0.1+ K123Q C10 0.2- 1.2-
K123M G96 0.4+ 0.2- K123O H01 0.4+ 0.1+
K123N 204 1.1- 0.6+ K123O 695 0.2- 0.3-

Ephemeris:
P/2012 F5 (Gibbs)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2012 02 25 11 33 43.9 -08 14 42 2.1632 3.0945 156.2 7.4 18.6
...
2012 03 11 11 23 13.5 -06 51 17 2.1169 3.0988 169.4 3.4 18.5
...
2012 03 19 11 17 27.1 -05 56 54 2.1187 3.1010 168.6 3.6 18.5
...
2012 03 25 11 13 21.6 -05 13 58 2.1323 3.1026 163.8 5.1 18.6
2012 03 26 11 12 42.7 -05 06 45 2.1356 3.1028 162.9 5.4 18.6
2012 03 27 11 12 04.5 -04 59 31 2.1392 3.1031 161.9 5.7 18.6
...
2012 04 02 11 08 31.7 -04 16 33 2.1662 3.1047 155.7 7.6 18.6
...
2012 04 10 11 04 40.4 -03 21 46 2.2166 3.1067 147.2 10.1 18.7
...
2012 04 25 11 00 42.1 -01 54 27 2.3498 3.1102 131.6 14.0 18.8

Gareth V. Williams (C) Copyright 2012 MPC M.P.E.C. 2012-F91
 

Electronic Telegram No. 3069
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University;
20 Oxford St.; Cambridge, MA 02138; U.S.A.
e-mail: cbatiau@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network

COMET P/2012 F5 (GIBBS)
A. R. Gibbs reports his discovery of a comet on CCD images obtained in
good seeing with the Mount Lemmon 1.5-m reflector (discovery observations
tabulated below); four co-added 30-s exposures show a stellar coma and a long,
narrow tail of length 7'.3-7'.4 in p.a. 292.5 deg. After posting on the
Minor Planet Center's NEOCP webpage, other CCD astrometrists have also noted
the object's cometary appearance. Bringfried Stecklum (Thueringer
Landessternwarte, Tautenburg, Germany) writes that five co-added 180-s R-band
frames (pixel scale 1".2) obtained on Mar. 22.89 UT with the 2-m Tautenburg
Telescope in its Schmidt configuration (diameter of the correction plate 1.34
m, f/2) yield a starlike coma of magnitude 18.3 with an extremely narrow and
completely straight tail extending to at least 8'.5 that emerges from an
elongated core (the latter being only marginally wider than the stellar
images). Luca Buzzi finds a very straight, narrow tail at least 6'.5 long in
p.a. 292 deg on stacked images taken in good seeing with a 0.60-m f/4.6
reflector at Varese, Italy, on Mar. 23.0; astrometry was difficult because
the nuclear condensation is only slightly brighter than the tail. H. Sato
(Tokyo, Japan) remotely obtained images with a 0.25-m f/3.4 astrograph at the
RAS Observatory near Mayhill, NM, U.S.A., on Mar. 23.2; seven stacked 120-s
exposures show a diffuse coma 20" in diameter with a total V-band magnitude
(as measured within a circular aperture of radius 10") of 18.1. Sato took
follow-up images with a 0.51-m f/6.8 astrograph at the same site on Mar.
25.3, showing a diffuse 10" coma and a straight tail 10' long toward p.a. 300
degrees. W. H. Ryan finds a narrow, distinct tail > 2' long in p.a. about
300 deg on R-band images taken on Mar. 23.3 with the Magdalena Ridge
Observatory 2.4-m f/8.9 reflector; follow-up observations by W. H. Ryan with
E. V. Ryan on Mar. 24.25-24.38 show a narrow, distinct tail > 4' long in p.a.
about 300 deg. P. Birtwhistle (Great Shefford, Berkshire, England; 0.40-m
f/6 reflector) finds a very concentrated nuclear condensation 6" in diameter
with a very thin, very straight tail at least 9'.5 long (to the edge of the
field) in p.a. 292 deg on his images from Mar. 24.0; his follow-up images
taken on Mar. 25.05-25.06 show a central condensation 8" in diameter (less
distinct than the previous night, and difficult to measure) with a straight,
thin tail 7'.5 long in p.a. 292 deg (the first 4'.5 being significantly
brighter than the last 3'). Images taken by M. Masek, J. Cerny, J. Ebr, M.
Prouza, P. Kubanek, and M. Jelinek with a 0.3-m f/10 reflector at the Pierre
Auger Observatory at Malarguee, Mendoza, Argentina, on Mar. 24.0 show a tail
160" long in p.a. 295 deg. T. Vorobjov reports that six stacked 120-s
exposures taken on Mar. 24.25-24.26 with the Kitt Peak 1.3-m f/13 Cassegrain
reflector shows a 3'30" tail in p.a. 290 deg. Michal Zolnowski (Krakow,
Poland) and Michal Kusiak (Zywiec, Poland) found a 5' tail in p.a. 290 deg
on images taken on Mar. 24.94-24.96 with a 0.4-m reflector. Jean-Francois
Soulier (Maisoncelles, Seine et Marne, France, 30-cm f/4 reflector; Mar.
25.03-25.06) finds a 7' tail. G. Hug (Scranton, KS, U.S.A., 0.56-m
reflector + CCD, Mar. 25.3) measured a bright, narrow tail 7'-8' long in
p.a. about 290 deg. E. Guido, N. Howes, and G. Sostero stacked seven 300-s
unfiltered exposures taken with a 0.3-m reflector on Mar. 25.8 through a
0.3-m f/4.7 reflector at Povoletto, Italy, showing it to be elongated
with a narrow tail at least 30" long toward p.a. 300 deg; the central
condensation is very difficult to locate, hampering precise astrometric
measurement.

2012 UT R.A. (2000) Decl. Mag. Observer
Mar. 22.28771 11 15 10.24 - 5 33 32.0 Gibbs
22.28943 11 15 10.20 - 5 33 31.5 "
22.29118 11 15 10.09 - 5 33 30.7 "
22.29289 11 15 10.05 - 5 33 29.9 "
22.39053 11 15 05.89 - 5 32 47.6 18.1 "
22.39427 11 15 05.78 - 5 32 46.3 "
22.39784 11 15 05.62 - 5 32 44.7 "
22.40141 11 15 05.46 - 5 32 42.9 "

The available astrometry, the following preliminary elliptical orbital
elements by G. V. Williams, and an ephemeris appear on MPEC 2012-F87.

T = 2010 Sept.15.2693 TT Peri. = 189.5925
e = 0.384251 Node = 205.3500 2000.0
q = 1.876522 AU Incl. = 13.4844
a = 3.047544 AU n = 0.1852589 P = 5.32 years

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.

(C) Copyright 2012 CBAT
2012 March 25 (CBET 3069) Daniel W. E. Green


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