MPEC 2021-V21 : COMET P/2021 U3 (Attard-Maury)
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M.P.E.C. 2021-V21 Issued 2021 November 2, 01:42 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Division F 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 https://www.minorplanetcenter.net/ ISSN 1523-6714
COMET P/2021 U3 (Attard-Maury)
A. Maury reports the discovery of a comet in survey images taken on
Oct. 24 UT by MAP (W94), noting a fuzzy apperance, confirming its cometary
appearance on the following night by Observatorio Panameno (W95). Additional
reports of cometary features are as follows:
OC Date Reporter Coma Tail PA Exposures
X02 2021-10-27 E. Guido 6" 6" 275 51x60s
B96 2021-10-28 E. Bryssinck 8" 8" 270 60x60s
W88 2021-10-28 N. Paul 5".3 13x50s
G18 2021-10-29 A. Valvasori 5" 6" 270 66x60s
G40 2021-10-29 B. Lutkenhoner 7" 34x50s
G40 2021-10-29 N. Paul 7" 20x50s
204 2021-10-29 A. Aletti 5"
H06 2021-10-29 H. Sato 8" 6" 270 16x60s
G00 2021-11-01 M. Jaeger 10" 25" 262 11x150s
Observations:
PK21U030*KC2021 10 24.31345 06 26 47.39 -11 28 40.7 19.2 GVEV021W94
PK21U030 KC2021 10 24.31935 06 26 47.06 -11 28 34.9 19.2 GVEV021W94
PK21U030 KC2021 10 24.32513 06 26 46.73 -11 28 28.5 19.3 GVEV021W94
PK21U030 KC2021 10 25.34691 06 25 53.99 -11 10 19.5 19.3 GVEV021W95
PK21U030 KC2021 10 25.35220 06 25 53.63 -11 10 13.7 19.3 GVEV021W95
PK21U030 KC2021 10 25.35747 06 25 53.32 -11 10 07.7 18.8 GVEV021W95
PK21U030 KC2021 10 26.24349 06 25 04.92 -10 53 52.3 18.4 GVEV021W95
PK21U030 KC2021 10 26.24876 06 25 04.58 -10 53 46.2 18.9 GVEV021W95
PK21U030 KC2021 10 26.25403 06 25 04.28 -10 53 41.0 17.8 GVEV021W95
PK21U030 KC2021 10 26.31324 06 25 00.80 -10 52 35.1 18.9 GVEV021W95
PK21U030 KC2021 10 26.31852 06 25 00.45 -10 52 28.4 18.9 GVEV021W95
PK21U030 KC2021 10 26.32380 06 25 00.14 -10 52 23.3 18.8 GVEV021W95
PK21U030 KC2021 10 26.33464 06 24 59.52 -10 52 10.9 18.5 GVEV021W95
PK21U030 KC2021 10 26.33947 06 24 59.23 -10 52 05.3 18.9 GVEV021W95
PK21U030 KC2021 10 26.34475 06 24 58.91 -10 51 59.6 18.4 GVEV021W95
PK21U030 hC2021 10 27.02201406 24 19.59 -10 39 18.9 19.4 GVEV021L01
PK21U030 hC2021 10 27.02439706 24 19.49 -10 39 16.1 19.6 GVEV021L01
PK21U030 hC2021 10 27.02683206 24 19.33 -10 39 13.3 19.4 GVEV021L01
PK21U030 KC2021 10 27.07449 06 24 16.48 -10 38 19.7 18.6 GVEV021M10
PK21U030 KC2021 10 27.08457 06 24 15.83 -10 38 07.4 17.4 GVEV021M10
PK21U030 KC2021 10 27.10435 06 24 14.68 -10 37 44.6 18.6 GVEV021M10
PK21U030 KC2021 10 27.13497 06 24 12.71 -10 37 11.0 19.1 GVEV021L06
PK21U030 KC2021 10 27.14500 06 24 12.12 -10 36 59.0 19.3 GVEV021L06
PK21U030 KC2021 10 27.14669 06 24 12.01 -10 36 57.0 19.3 GVEV021L06
PK21U030 KC2021 10 27.14951 06 24 11.84 -10 36 53.7 19.3 GVEV021L06
PK21U030 KC2021 10 27.28100 06 24 04.22 -10 34 13.9 18.5 GVEV021X02
PK21U030 KC2021 10 27.30726 06 24 02.54 -10 33 43.8 19.2 GVEV021X02
PK21U030 KC2021 10 27.31348 06 24 02.15 -10 33 37.1 18.8 GVEV021W95
PK21U030 KC2021 10 27.31873 06 24 01.80 -10 33 31.5 18.6 GVEV021W95
PK21U030 KC2021 10 27.32395 06 24 01.48 -10 33 25.5 18.2 GVEV021W95
PK21U030 C2021 10 27.56150206 23 47.01 -10 28 54.6 18.94oVEV021T05
PK21U030 C2021 10 27.56334906 23 46.88 -10 28 51.9 18.91oVEV021T05
PK21U030 C2021 10 27.56609306 23 46.74 -10 28 49.2 19.14oVEV021T05
PK21U030 C2021 10 27.57484506 23 46.21 -10 28 39.3 19.03oVEV021T05
PK21U030 KC2021 10 28.05942 06 23 16.06 -10 19 11.5 19.2 RqEV021L27
PK21U030 KC2021 10 28.07027 06 23 15.41 -10 18 58.8 19.6 RqEV021L27
PK21U030 KC2021 10 28.08577 06 23 14.31 -10 18 40.5 19.4 RqEV021L27
PK21U030 KC2021 10 28.14193 06 23 10.58 -10 17 34.7 18.1 GVEV021B96
PK21U030 KC2021 10 28.16990 06 23 08.90 -10 17 00.8 18.7 GVEV021B96
PK21U030 KC2021 10 28.30123 06 23 00.70 -10 14 17.5 18.6 GVEV021W95
PK21U030 KC2021 10 28.30651 06 23 00.30 -10 14 10.9 18.7 GVEV021W95
PK21U030 %C2021 10 28.30677 06 23 00.29 -10 14 09.8 19.5 GVEV021W88
PK21U030 KC2021 10 28.31177 06 22 59.93 -10 14 04.8 18.8 GVEV021W95
PK21U030 %C2021 10 28.31515 06 22 59.76 -10 13 59.3 19.1 GVEV021W88
PK21U030 KC2021 10 29.05075 06 22 11.55 -09 59 18.0 19.1 GVEV021204
PK21U030 KC2021 10 29.08689 06 22 09.15 -09 58 34.4 17.4 GVEV021G18
PK21U030 KC2021 10 29.09598 06 22 08.46 -09 58 23.5 VEV021204
PK21U030 KC2021 10 29.11119 06 22 07.45 -09 58 04.8 18.7 RqEV021C10
PK21U030 2C2021 10 29.11302 06 22 07.53 -09 58 01.2 18.5 GVEV021G40
PK21U030 KC2021 10 29.12175 06 22 06.79 -09 57 52.5 17.8 GVEV021G18
PK21U030 2C2021 10 29.12727 06 22 06.53 -09 57 43.3 18.5 GVEV021G40
PK21U030 KC2021 10 29.13499 06 22 05.79 -09 57 35.7 18.7 RqEV021C10
PK21U030 2C2021 10 29.14106 06 22 05.54 -09 57 26.8 18.9 GVEV021G40
PK21U030 KC2021 10 29.15880 06 22 04.11 -09 57 06.7 18.7 RqEV021C10
PK21U030 9C2021 10 29.16098 06 22 04.12 -09 57 02.0 18.7 GVEV021G40
PK21U030 9C2021 10 29.17780 06 22 03.02 -09 56 41.2 18.8 GVEV021G40
PK21U030 KC2021 10 29.24649 06 21 58.52 -09 55 10.9 18.1 GVEV021W95
PK21U030 KC2021 10 29.25171 06 21 58.18 -09 55 04.6 18.7 GVEV021W95
PK21U030 KC2021 10 29.25692 06 21 57.81 -09 54 58.7 18.5 GVEV021W95
PK21U030 |C2021 10 29.46857 06 21 43.09 -09 50 43.4 VEV021H06
PK21U030 |C2021 10 29.47555 06 21 42.60 -09 50 34.6 18.6 GVEV021H06
PK21U030 KC2021 10 30.05036406 21 02.86 -09 38 35.2 19.7 GVEV021595
PK21U030 KC2021 10 30.05803106 21 02.27 -09 38 25.6 19.6 GVEV021595
PK21U030 KC2021 10 30.09324 06 20 59.74 -09 37 40.8 VEV021104
PK21U030 KC2021 10 30.11123 06 20 58.42 -09 37 18.6 19.1 GVEV021104
PK21U030 KC2021 10 30.12957 06 20 57.03 -09 36 55.4 18.7 GVEV021104
PK21U030 KC2021 10 30.31200 06 20 44.15 -09 32 55.9 18.7 GVEV021W95
PK21U030 KC2021 10 30.31722 06 20 43.78 -09 32 49.2 18.6 GVEV021W95
PK21U030 KC2021 10 30.32245 06 20 43.39 -09 32 42.7 18.6 GVEV021W95
PK21U030 3C2021 10 30.68570 06 20 17.09 -09 24 55.5 17.8 RVEV021Q62
PK21U030 3C2021 10 30.69140 06 20 16.66 -09 24 48.2 17.9 RVEV021Q62
PK21U030 3C2021 10 30.69717 06 20 16.30 -09 24 40.8 18.0 RVEV021Q62
PK21U030 KC2021 10 30.97415 06 19 55.96 -09 18 49.9 19.1 GXEV021G02
PK21U030 KC2021 10 30.97898 06 19 55.55 -09 18 43.7 XEV021G02
PK21U030 KC2021 10 30.98384 06 19 55.24 -09 18 36.7 XEV021G02
PK21U030 KC2021 10 31.23836 06 19 36.23 -09 12 56.2 18.4 GVEV021W95
PK21U030 KC2021 10 31.24359 06 19 35.82 -09 12 49.1 17.8 GVEV021W95
PK21U030 KC2021 10 31.31648 06 19 30.12 -09 11 13.6 18.7 GVEV021W95
PK21U030 KC2021 10 31.32169 06 19 29.72 -09 11 06.7 18.7 GVEV021W95
PK21U030 KC2021 10 31.32690 06 19 29.31 -09 10 59.7 18.4 GVEV021W95
PK21U030 C2021 10 31.55091606 19 12.27 -09 06 08.3 18.63oVEV021T05
PK21U030 C2021 10 31.55320906 19 12.06 -09 06 05.7 18.84oVEV021T05
PK21U030 C2021 10 31.56651606 19 11.02 -09 05 47.6 18.90oVEV021T05
PK21U030 C2021 10 31.56931106 19 10.81 -09 05 43.4 19.09oVEV021T05
PK21U030 KC2021 11 01.09948 06 18 29.52 -08 53 56.0 18.6 GVEV021G00
PK21U030 KC2021 11 01.10862 06 18 28.80 -08 53 43.5 18.7 GVEV021G00
PK21U030 KC2021 11 01.11299 06 18 28.48 -08 53 37.6 18.8 GVEV021G00
PK21U030 KC2021 11 01.30445 06 18 13.49 -08 49 09.1 VEV021W95
PK21U030 KC2021 11 01.30973 06 18 13.03 -08 49 02.7 18.4 GVEV021W95
PK21U030 KC2021 11 01.31499 06 18 12.58 -08 48 55.5 18.7 GVEV021W95
PK21U030 KC2021 11 01.42132206 18 04.05 -08 46 36.8 18.3 GXEV021858
PK21U030 KC2021 11 01.45126506 18 01.58 -08 45 56.0 19.6 GXEV021858
PK21U030 KC2021 11 01.48174106 17 59.06 -08 45 14.8 18.5 GXEV021858
Observer details:
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers
P. Bacci, L. Tesi, G. Fagioli. 0.60-m f/4 reflector + CCD.
204 Schiaparelli Observatory. Observer A. Aletti. 0.20-m f/4 reflector +
CCD.
595 Farra d'Isonzo. Observer E. Pettarin. 0.40-m f/5.15 reflector + CCD.
858 Tebbutt Observatory, Edgewood. Observer F. B. Zoltowski. 0.16-m
refractor + CCD.
B96 Brixiis Observatory, Kruibeke. Observer E. Bryssinck. 0.4-m f/3.8
reflector + CCD.
C10 Maisoncelles. Observer J.-F. Soulier. 0.30-m f/3.8 Newtonian reflector +
CCD.
G00 AZM Martinsberg, Oed. Observers M. Jaeger, E. Prosperi, S. Prosperi.
Measurer M. Jaeger. 0.28-m f/2.2 reflector + CCD.
G02 KYSUCE Observatory, Kysucke Nove Mesto. Observer M. Urbanik. 0.40-m
f/4.5 Corrected Dall-Kirkham + CCD.
G18 ALMO Observatory, Padulle. Observers A. Valvasori, E. Guido. Measurer A.
Valvasori. 0.30-m f/4 reflector + CCD.
G40 Slooh.com Canary Islands Observatory. Observers N. Paul, B. Lutkenhoner.
0.5-m f/6.8 Corrected Dall-Kirkham + CCD.
H06 iTelescope Observatory, Mayhill. Observer H. Sato. 0.43-m f/6.8
astrograph + CCD + f/4.5 focal reducer.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
L06 Sormano 2 Observatory, Bellagio Via Lattea. Observer G. Ventre.
Measurers P. Sicoli, G. Ventre. 0.36-m Schmidt-Cassegrain + CCD.
L27 29PREMOTE Observatory, Dauban. Observer J.-F. Soulier. 0.25-m f/3.5
Newtonian reflector + CCD.
M10 CPF Observatory, St Vallier de Thiey. Observer C. Pin-ferrier. 0.25-m
f/5 reflector + CCD.
Q62 iTelescope Observatory, Siding Spring. Observer R. Ligustri.
T05 ATLAS-HKO, Haleakala. Observers L. Denneau, J. Tonry, H. Weiland.
Measurers L. Denneau, J. Tonry, H. Weiland, A. Fitzsimmons, J. Robinson,
N. Erasmus. 0.5-m reflector + CCD.
W88 Slooh.com Chile Observatory, La Dehesa. Observer N. Paul. 0.43-m f/6.8
Corrected Dall-Kirkham + CCD.
W94 MAP, San Pedro de Atacama. Observers A. Maury, G. Attard. Measurers A.
Maury, G. Attard, D. Parrott. 0.28-m f/2.2 Schmidt + CCD.
W95 Observatorio Panameno, San Pedro de Atacama. Observers A. Maury, G.
Attard, J. Fabrega. Measurers A. Maury, G. Attard, D. Parrott. 0.40-m
f/3.8 reflector + CCD.
X02 Telescope Live, El Sauce. Observers E. Guido, M. Rocchetto, E. Bryssinck,
M. Fulle, G. Milani, C. Nassef, G. Savini, A. Valvasori. Measurer E.
Guido. 0.61-m f/6.5 astrograph + CCD.
Orbital elements:
P/2021 U3 (Attard-Maury)
Epoch 2021 Nov. 2.0 TT = JDT 2459520.5
T 2021 Oct. 25.43539 TT Rudenko
q 1.8884498 (2000.0) P Q
n 0.11338158 Peri. 335.48316 +0.37072033 -0.19317035
a 4.2277346 Node 75.09970 +0.92846895 +0.10091053
e 0.5533187 Incl. 70.05875 -0.02262395 +0.97596223
P 8.69
From 93 observations 2021 Oct. 24-Nov. 1, mean residual 0".4.
P/2021 U3 (Attard-Maury)
Epoch 2030 June 28.0 TT = JDT 2462680.5
T 2030 July 12.11045 TT Rudenko
q 1.8971229 (2000.0) P Q
n 0.11294802 Peri. 335.58090 +0.37124960 -0.19453041
a 4.2385466 Node 75.07115 +0.92829724 +0.09979617
e 0.5524119 Incl. 69.99176 -0.02092747 +0.97580666
P 8.73
From 93 observations 2021 Oct. 24-Nov. 1, mean residual 0".4.
P/2021 U3 (Attard-Maury)
Epoch 2021 July 5.0 TT = JDT 2459400.5
T 2021 Oct. 25.42981 TT Rudenko
q 1.8884675 (2000.0) P Q
n 0.11340068 Peri. 335.48005 +0.37073452 -0.19313507
a 4.2272598 Node 75.09913 +0.92846193 +0.10095870
e 0.5532644 Incl. 70.05946 -0.02267959 +0.97596423
P 8.69
From 93 observations 2021 Oct. 24-Nov. 1, mean residual 0".4.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2021 10 03 06 33 23.9 -16 04 50 1.6241 1.9000 89.5 31.8 19.3
...
2021 10 18 06 30 56.8 -13 08 45 1.4093 1.8897 102.2 31.0 19.0
...
2021 10 26 06 25 18.3 -10 58 26 1.2957 1.8885 110.4 29.6 18.8
...
2021 11 01 06 18 37.5 -08 56 05 1.2140 1.8894 117.4 27.8 18.7
2021 11 02 06 17 17.1 -08 33 15 1.2008 1.8898 118.7 27.4 18.7
2021 11 03 06 15 52.6 -08 09 38 1.1879 1.8901 120.0 27.0 18.6
...
2021 11 09 06 05 57.4 -05 30 42 1.1143 1.8933 128.1 24.3 18.5
...
2021 11 17 05 48 38.1 -01 08 00 1.0317 1.9001 140.2 19.4 18.4
...
2021 12 02 05 04 28.8 +09 30 01 0.9501 1.9204 165.4 7.4 18.2
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-V21
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