* Astronomy

Comet C/2015 F3 (SWAN) makes its closest approach to the Earth (1.054 AU) on the 29th April 2015 

Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   Mag
2015 04 28    03 44 01.9 +86 31 10   1.0542  1.2242    72.8    51.8  15.5
2015 04 29    05 30 48.0 +86 58 18   1.0538  1.2366    73.7    51.4  15.5
2015 04 30    07 23 07.7 +86 40 01   1.0539  1.2491    74.6    51.0  15.6
2015 05 01    08 42 05.5 +85 45 38   1.0547  1.2616    75.4    50.6  15.6
2015 05 02    09 29 58.7 +84 32 33   1.0560  1.2742    76.2    50.2  15.7
2015 05 03    09 59 48.0 +83 10 38   1.0580  1.2868    77.0    49.7  15.7
2015 05 04    10 19 37.8 +81 44 21   1.0606  1.2995    77.8    49.3  15.8
2015 05 05    10 33 38.6 +80 15 43   1.0638  1.3123    78.5    48.9  15.8
2015 05 06    10 44 03.3 +78 45 51   1.0676  1.3251    79.3    48.4  15.9
2015 05 07    10 52 06.3 +77 15 23   1.0721  1.3379    80.0    47.9  15.9
2015 05 08    10 58 32.3 +75 44 43   1.0772  1.3508    80.6    47.5  16.0
2015 05 09    11 03 49.0 +74 14 08   1.0830  1.3637    81.3    47.0  16.0
2015 05 10    11 08 14.7 +72 43 52   1.0894  1.3766    81.9    46.6  16.1
2015 05 11    11 12 01.9 +71 14 06   1.0964  1.3896    82.5    46.1  16.1
2015 05 12    11 15 19.5 +69 44 57   1.1040  1.4026    83.0    45.6  16.2
2015 05 13    11 18 13.7 +68 16 33   1.1123  1.4156    83.5    45.2  16.2
2015 05 14    11 20 49.2 +66 49 01   1.1211  1.4287    84.0    44.7  16.3
2015 05 15    11 23 09.6 +65 22 26   1.1306  1.4418    84.4    44.2  16.4
2015 05 16    11 25 17.6 +63 56 53   1.1407  1.4549    84.9    43.8  16.4
2015 05 17    11 27 15.3 +62 32 27   1.1513  1.4680    85.2    43.3  16.5
2015 05 18    11 29 04.5 +61 09 12   1.1626  1.4812    85.6    42.9  16.5
2015 05 19    11 30 46.4 +59 47 11   1.1744  1.4943    85.9    42.5  16.6
2015 05 20    11 32 22.2 +58 26 26   1.1868  1.5075    86.2    42.0  16.7
2015 05 21    11 33 52.6 +57 07 00   1.1997  1.5207    86.4    41.6  16.7
2015 05 22    11 35 18.6 +55 48 55   1.2131  1.5339    86.7    41.2  16.8
2015 05 23    11 36 40.6 +54 32 14   1.2270  1.5471    86.8    40.8  16.8
2015 05 24    11 37 59.2 +53 16 56   1.2415  1.5603    87.0    40.4  16.9
2015 05 25    11 39 14.9 +52 03 03   1.2565  1.5735    87.1    40.0  17.0
2015 05 26    11 40 27.9 +50 50 36   1.2719  1.5868    87.2    39.6  17.0
2015 05 27    11 41 38.6 +49 39 34   1.2878  1.6000    87.3    39.2  17.1
2015 05 28    11 42 47.3 +48 29 58   1.3041  1.6132    87.3    38.9  17.2
2015 05 29    11 43 54.2 +47 21 48   1.3209  1.6265    87.3    38.5  17.2
2015 05 30    11 44 59.5 +46 15 03   1.3380  1.6397    87.3    38.1  17.3
2015 05 31    11 46 03.4 +45 09 43   1.3556  1.6530    87.2    37.8  17.3

Orbital elements:
    C/2015 F3 (SWAN)
T 2015 Mar.  9.54355 TT                                 MPCW
q   0.8348706            (2000.0)            P               Q
                   Peri.   57.92302     +0.32519116     -0.80136658
                   Node    31.60058     +0.12194821     -0.49094369
e   1.0            Incl.   73.36267     +0.93775228     +0.34173953
From 46 observations 2015 Mar. 24-26.

MPEC 2015 - F122