[Iaude] MPEC C27: COMET C/2018 B1 (Lemmon)

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Wed Feb 7 13:09:17 EST 2018


M.P.E.C. 2018-C27                                Issued 2018 Feb. 7, 17:59 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/2018 B1 (Lemmon)
 
Observations:
    CK18B010  C2017 01 16.47569 07 40 01.677+29 07 35.01         22.1 TLEC027F51
    CK18B010  C2017 01 16.48751 07 40 00.735+29 07 38.49         22.3 TLEC027F51
    CK18B010  C2017 01 16.49917 07 39 59.801+29 07 41.92               LEC027F51
    CK18B010  C2017 01 28.44796 07 24 24.925+29 57 18.43         22.4 TLEC027F51
    CK18B010  C2017 01 28.46027 07 24 23.948+29 57 21.11         22.7 TLEC027F51
    CK18B010  C2017 01 28.47259 07 24 22.981+29 57 24.00         22.8 TLEC027F51
    CK18B010  C2018 01 25.14389 03 50 50.57 +37 35 47.0          19.4 TUEC027G96
    CK18B010  C2018 01 25.14920 03 50 50.20 +37 35 44.9          19.4 TUEC027G96
    CK18B010  C2018 01 25.15448 03 50 49.82 +37 35 43.7          19.8 TUEC027G96
    CK18B010  C2018 01 25.15974 03 50 49.49 +37 35 41.9          19.6 TUEC027G96
    CK18B010  C2018 01 25.21788903 50 45.45 +37 35 21.5          19.5 TUEC027H01
    CK18B010  C2018 01 25.22179503 50 45.17 +37 35 20.1          19.5 TUEC027H01
    CK18B010  C2018 01 25.24501203 50 43.60 +37 35 12.3          19.6 TUEC027H01
    CK18B010  C2018 01 25.24986503 50 43.27 +37 35 10.6          19.4 TUEC027H01
    CK18B010 KC2018 01 26.11240503 49 45.97 +37 30 21.5          19.3 TUEC027H01
    CK18B010 KC2018 01 26.12709403 49 44.98 +37 30 16.6          19.4 TUEC027H01
    CK18B010 KC2018 01 26.13522103 49 44.45 +37 30 13.8          19.4 TUEC027H01
    CK18B010 KC2018 01 26.14399103 49 43.88 +37 30 10.9          19.5 TUEC027H01
    CK18B010 IC2018 01 26.80616803 49 00.67 +37 26 28.3          20.0 TSEC027L01
    CK18B010 KC2018 01 26.82609403 48 59.41 +37 26 21.7          20.0 TSEC027L01
    CK18B010 KC2018 01 26.83086303 48 59.03 +37 26 19.9          20.1 TSEC027L01
    CK18B010  C2018 01 27.10724 03 48 41.24 +37 24 47.3          19.2 TUEC027I52
    CK18B010  C2018 01 27.11103 03 48 41.05 +37 24 47.2          18.7 TUEC027I52
    CK18B010  C2018 01 27.11550 03 48 40.75 +37 24 44.7          19.4 TUEC027I52
    CK18B010  C2018 01 27.11900 03 48 40.55 +37 24 44.4          19.3 TUEC027I52
    CK18B010 KC2018 01 27.16842 03 48 37.24 +37 24 27.7          19.4 TqEC027H36
    CK18B010 KC2018 01 27.18343 03 48 36.17 +37 24 23.4          19.5 TqEC027H36
    CK18B010 KC2018 01 27.19845 03 48 35.22 +37 24 17.0          19.4 TqEC027H36
    CK18B010  C2018 01 27.24730003 48 32.19 +37 24 00.5          19.8 TUEC027H01
    CK18B010  C2018 01 27.26662603 48 30.92 +37 23 53.8          19.6 TUEC027H01
    CK18B010  C2018 01 27.27017003 48 30.71 +37 23 52.7          19.4 TUEC027H01
    CK18B010  C2018 01 27.27665903 48 30.25 +37 23 50.6          19.8 TUEC027H01
    CK18B010 KC2018 01 28.06456 03 47 40.54 +37 19 29.0          19.2 TqEC027H36
    CK18B010 KC2018 01 28.07944 03 47 39.64 +37 19 22.8          19.5 TqEC027H36
    CK18B010 KC2018 01 28.09432 03 47 38.79 +37 19 19.1          19.6 TqEC027H36
    CK18B010  C2018 01 28.11978 03 47 37.11 +37 19 10.1                UEC027I52
    CK18B010  C2018 01 28.12331 03 47 36.77 +37 19 08.6          20.7 TUEC027I52
    CK18B010 KC2018 01 30.03058 03 45 40.40 +37 08 36.5          19.3 TqEC027H36
    CK18B010 KC2018 01 30.04541 03 45 39.58 +37 08 31.5          19.0 TqEC027H36
    CK18B010  C2018 01 30.11058 03 45 35.62 +37 08 09.3          19.7 ToEC027926
    CK18B010  C2018 01 30.12451 03 45 34.76 +37 08 04.6          19.9 ToEC027926
    CK18B010  C2018 01 30.13878 03 45 33.96 +37 08 00.3          19.7 ToEC027926
    CK18B010 KC2018 01 31.77020 03 43 59.19 +36 59 04.1                UEC027J95
    CK18B010 KC2018 01 31.77614 03 43 58.86 +36 59 02.1                UEC027J95
    CK18B010 KC2018 01 31.78425 03 43 58.45 +36 58 59.4          19.8 TUEC027J95
    CK18B010 KC2018 02 01.95648 03 42 52.86 +36 52 37.6                UEC027J95
    CK18B010 KC2018 02 01.96845 03 42 52.23 +36 52 33.8          19.8 TUEC027J95
    CK18B010  C2018 02 03.45766 03 41 32.18 +36 44 35.6          20.3 TrEC027P93
    CK18B010  C2018 02 03.46251 03 41 31.97 +36 44 34.1          20.6 TrEC027P93
    CK18B010  C2018 02 03.46736 03 41 31.71 +36 44 32.7          20.7 TrEC027P93
    CK18B010  C2018 02 04.13270 03 40 57.08 +36 41 00.5          19.5 TUEC027703
    CK18B010  C2018 02 04.13856 03 40 56.73 +36 40 59.3          19.2 TUEC027703
    CK18B010  C2018 02 04.14439 03 40 56.41 +36 40 57.3          19.1 TUEC027703
    CK18B010  C2018 02 04.15019 03 40 56.14 +36 40 55.2          19.2 TUEC027703
    CK18B010 KC2018 02 04.74279 03 40 25.76 +36 37 45.9          19.1 TqEC027K61
    CK18B010 KC2018 02 04.74475 03 40 25.65 +36 37 45.0          18.0 TqEC027K61
    CK18B010 KC2018 02 05.07115 03 40 09.30 +36 36 03.2          19.7 TqEC027H36
    CK18B010 KC2018 02 05.07714 03 40 08.98 +36 35 59.7          19.5 TqEC027H36
    CK18B010  C2018 02 05.10411 03 40 07.62 +36 35 52.0          19.0 TUEC027I52
    CK18B010  C2018 02 05.10940 03 40 07.29 +36 35 50.6          19.2 TUEC027I52
    CK18B010  C2018 02 05.11576 03 40 07.01 +36 35 49.2          19.2 TUEC027I52
    CK18B010  C2018 02 05.12147 03 40 06.68 +36 35 47.0                UEC027I52
    CK18B010 KC2018 02 06.04673 03 39 21.09 +36 30 56.9          20.1 TqEC027H36
    CK18B010 KC2018 02 06.05885 03 39 20.34 +36 30 52.7          19.6 TqEC027H36
    CK18B010 KC2018 02 06.07226 03 39 19.72 +36 30 48.4                oEC027711
    CK18B010 KC2018 02 06.07479 03 39 19.62 +36 30 47.6                oEC027711
    CK18B010 KC2018 02 06.07738 03 39 19.47 +36 30 47.0                oEC027711
    CK18B010  C2018 02 07.09112 03 38 30.96 +36 25 31.1          18.7 TUEC027I52
    CK18B010  C2018 02 07.10238 03 38 30.35 +36 25 28.5          19.4 TUEC027I52
    CK18B010 KC2018 02 07.11588 03 38 29.68 +36 25 24.1                oEC027711
    CK18B010 KC2018 02 07.11860 03 38 29.53 +36 25 23.2                oEC027711
    CK18B010  C2018 02 07.11872 03 38 29.59 +36 25 23.1          19.1 TUEC027I52
    CK18B010 KC2018 02 07.12134 03 38 29.41 +36 25 22.5                oEC027711
 
Observer details:
703 Catalina Sky Survey.  Observer D. C. Fuls.  Measurers E. J. Christensen,
    D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski,
    S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly.
    0.68-m Schmidt + 10K CCD.
711 McDonald Observatory.  Observer J. G. Ries.  2.1-m reflector + CCD + focal
    reducer.
926 Tenagra II Observatory.  Observers M. Schwartz, P. R. Holvorcem.  Measurer
    M. Schwartz.  0.81-m f/7 Ritchey-Chretien + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz,
    M. Willman.  Measurers K. Chambers, S. Chastel, L. Denneau, H. Flewelling,
    M. Huber, E. Lilly, E. Magnier, R. Wainscoat, C. Waters, R. Weryk.  1.8-m
    Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey.  Observer A. D. Grauer.  Measurers E. J. Christensen,
    D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski,
    S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly.
    1.5-m reflector + 10K 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.
H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.56-m reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observers R. A. Kowalski,
    D. C. Fuls, G. J. Leonard.  Measurers E. J. Christensen, D. C. Fuls,
    A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski, S. M. Larson,
    G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly.  1.0-m reflector
    + CCD.
J95 Great Shefford.  Observer P. Birtwhistle.  0.40-m f/6.0 Schmidt-Cassegrain
    + CCD.
K61 Rokycany Observatory.  Observer M. Adamovsky.  0.51-m f/6.8 reflector
    + CCD.
L01 Visnjan Observatory, Tican.  Observers K. Korlevic, F. Hrzenjak.  Measurer
    K. Korlevic.  1.0-m f/2.9 reflector + CCD.
P93 Space Tracking and Communications Center, JAXA.  Observers K. Nishiyama,
    T. Fujiwara.  1.0-m f/3.0 reflector + CCD.
 
Orbital elements:
    C/2018 B1 (Lemmon)
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5
T 2018 Mar. 30.55161 TT                                 MPCW
q   5.1170259            (2000.0)            P               Q
z  -0.0005992      Peri.   68.35212     +0.39402399     +0.89231035
 +/-0.0000160      Node   133.15846     +0.69132091     -0.44567575
e   1.0030661      Incl.  162.42299     +0.60565707     -0.07180090
>From 73 observations 2017 Jan. 16-2018 Feb. 7, mean residual 0".5.

Ephemeris:
    C/2018 B1 (Lemmon)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2018 01 08    04 14 08.1 +39 09 19   4.3808  5.1546   138.1     7.3  19.3
...
2018 01 23    03 53 19.0 +37 47 50   4.5783  5.1421   120.0     9.5  19.4
...
2018 01 31    03 44 43.5 +37 03 17   4.7065  5.1364   110.6    10.3  19.5
...
2018 02 06    03 39 23.3 +36 31 11   4.8097  5.1327   103.6    10.8  19.5
2018 02 07    03 38 35.3 +36 26 00   4.8274  5.1321   102.5    10.8  19.5
2018 02 08    03 37 48.7 +36 20 53   4.8451  5.1315   101.4    10.9  19.5
...
2018 02 14    03 33 39.4 +35 51 23   4.9533  5.1283    94.6    11.1  19.6
...
2018 02 22    03 29 22.2 +35 16 00   5.0999  5.1246    85.9    11.1  19.6
...
2018 03 09    03 24 37.6 +34 23 15   5.3700  5.1197    70.2    10.5  19.7

Gareth V. Williams           (C) Copyright 2018 MPC           M.P.E.C. 2018-C27



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