[Iaude] MPEC P41: COMET C/2019 NJ3 (Lemmon)
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Tue Aug 11 15:57:36 EDT 2020
M.P.E.C. 2020-P41 Issued 2020 August 11, 19:34 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 at CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
COMET C/2019 NJ3 (Lemmon)
This object has been found to display cometary features. Reports are as
follows:
OC Date Reporter Coma Tail PA Exposures
X02 2020-07-30 E. Guido 7" 15" 305 17x60s
Q62 2019-08-01 H. Sato 8" 2x60s
Observations:
CK19N03J &C2019 06 05.38366922 20 33.23 -15 38 24.5 21.6 gVEP041W84
CK19N03J &C2019 06 27.29128522 17 31.67 -18 28 05.7 21.5 gVEP041W84
CK19N03J C2019 07 02.55322522 15 54.228-19 16 38.75 20.73GVEP041F51
CK19N03J C2019 07 02.56438522 15 53.976-19 16 44.81 20.71GVEP041F51
CK19N03J C2019 07 02.57568622 15 53.703-19 16 51.13 20.87GVEP041F51
CK19N03J C2019 07 02.58681922 15 53.477-19 16 57.53 20.60GVEP041F51
CK19N03J &C2019 08 08.20813721 55 07.79 -25 51 20.1 20.3 iVEP041W84
CK19N03J C2019 10 17.21265921 07 04.654-35 31 29.04 20.76GVEP041F52
CK19N03J C2019 10 17.22292221 07 04.427-35 31 31.46 20.52GVEP041F52
CK19N03J C2019 10 17.23857821 07 04.153-35 31 35.22 20.32GVEP041F52
CK19N03J C2019 10 17.24892221 07 03.921-35 31 38.50 20.67GVEP041F52
CK19N03J C2020 07 25.27156 00 52 33.16 -71 38 56.1 18.0 VqEP041X74
CK19N03J C2020 07 25.27966 00 52 33.44 -71 39 05.1 qEP041X74
CK19N03J C2020 07 25.29933 00 52 34.21 -71 39 30.0 18.4 VqEP041X74
CK19N03J C2020 07 25.30793 00 52 34.67 -71 39 41.6 18.1 VqEP041X74
CK19N03J KC2020 07 30.25430 00 55 59.20 -73 21 09.1 18.8 GVEP041X02
CK19N03J KC2020 07 30.26445 00 55 59.56 -73 21 21.6 19.0 GVEP041X02
CK19N03J 1C2020 08 01.79079 00 57 29.77 -74 12 23.2 VEP041Q62
CK19N03J 1C2020 08 01.79168 00 57 29.80 -74 12 24.0 18.0 GVEP041Q62
CK19N03J KC2020 08 07.32791 01 00 08.18 -76 01 46.6 18.1 GVEP041W95
CK19N03J KC2020 08 07.34288 01 00 08.42 -76 02 04.3 18.0 GVEP041W95
CK19N03J KC2020 08 07.35822 01 00 08.63 -76 02 22.0 18.2 GVEP041W95
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, A.
Schultz, M. Willman. Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
F52 Pan-STARRS 2, Haleakala. Observers J. Bulger, K. Chambers, T. Dukes, T.
Lowe, A. Schultz, M. Willman. Measurers S. Chastel, M. Huber, Y.
Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
Q62 iTelescope Observatory, Siding Spring. Observer H. Sato. 0.51-m f/6.8
astrograph + CCD + f/4.5 focal reducer.
W84 Cerro Tololo-DECam. Observer . Measurer S. Deen. 4.0-m reflector + CCD.
W95 Observatorio Panameno, San Pedro de Atacama. Observer A. Maury. 0.4-m
Newtonian 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. 0.6-m f/6.5 astrograph + CCD.
X74 Observatorio Campo dos Amarais. Observer M. Forslund. Measurer S. Deen.
0.3-m f/4 reflector + CCD.
Orbital elements:
C/2019 NJ3 (Lemmon)
Epoch 2020 Nov. 7.0 TT = JDT 2459160.5
T 2020 Oct. 22.28282 TT Rudenko
q 4.3616695 (2000.0) P Q
z -0.0001851 Peri. 246.84130 +0.21994173 -0.76828950
+/-0.0000033 Node 142.45533 +0.03120855 +0.62144526
e 1.0008075 Incl. 99.43871 -0.97501367 -0.15341786
>From 39 observations 2019 June 5-2020 Aug. 7, mean residual 0".4.
C/2019 NJ3 (Lemmon)
Epoch 2020 May 31.0 TT = JDT 2459000.5
T 2020 Oct. 22.15886 TT Rudenko
q 4.3618047 (2000.0) P Q
z -0.0002042 Peri. 246.82204 +0.22020051 -0.76819206
+/-0.0000033 Node 142.45333 +0.03100960 +0.62148772
e 1.0008907 Incl. 99.43735 -0.97496161 -0.15373344
>From 39 observations 2019 June 5-2020 Aug. 7, mean residual 0".4.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2020 07 12 00 41 20.3 -67 01 18 3.9234 4.4421 114.5 12.0 18.4
...
2020 07 27 00 53 48.0 -72 14 34 3.8911 4.4204 115.2 12.0 18.4
...
2020 08 04 00 58 40.2 -74 56 25 3.8971 4.4102 114.1 12.1 18.4
...
2020 08 10 01 00 59.8 -76 53 06 3.9115 4.4032 112.7 12.3 18.4
2020 08 11 01 01 14.2 -77 12 04 3.9146 4.4021 112.4 12.3 18.4
2020 08 12 01 01 25.8 -77 30 53 3.9180 4.4010 112.1 12.3 18.4
...
2020 08 18 01 01 21.8 -79 20 12 3.9426 4.3947 110.1 12.5 18.4
...
2020 08 26 00 56 43.6 -81 34 57 3.9857 4.3871 106.9 12.7 18.4
...
2020 09 10 00 19 38.0 -85 03 11 4.0919 4.3756 99.7 13.1 18.5
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-P41
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