C/2013 J5 (Boattini)

Metadata

Parameter Value
Designation C/2013 J5 (Boattini)
Type C
Perihelion (tp_cal, UTC) 2012-11-30T00:52:09.624000Z
Orbit solution date (soln_date, UTC) 2022-07-06T03:12:22Z
Obs used 74
NEO -
M1 10.000
K1 10.000
PC 0.030
Osculating Elements
Parameter Value
Epoch (epoch_cal, TDB) 2013-05-04.0000000
e 1.00247225
q (au) 4.905909
a (au) -1984.387923
i (deg) 136.025000
Ω (om, deg) 256.785024
ω (w, deg) 19.174987
M (ma, deg) 0.001728

Magnitude

C/2013 J5 (Boattini) · Magnitude (Full range)

Scatter + Global Linear

$$ M_a = (9.126 + 3.952\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$

Model Parameters

Parameter Value
H0 9.126
n 3.952
gf 0.956
gb -0.998
k 1.000
δ90 9.999
Parameter Symbol Range Description
Absolute magnitude at 1 AU from Sun and Earth H0 -5 to 20 Intrinsic brightness of the comet
Photometric slope parameter n 2 to 6 Rate of brightness change with heliocentric distance
Forward scattering asymmetry factor gf 0.8 to 1 Degree of forward scattering
Backward scattering asymmetry factor gb -1 to -0.5 Degree of backward scattering
Partitioning coefficient k 0.8 to 1 Ratio between forward/backward scattering contributions
Dust-to-gas brightness ratio δ90 1 to 10 Relative contribution of dust scattering to gas emission

Reference: EPSC-DPS2025-160

Ephemeris

Date/Time (UTC) RA (J2000) Dec (J2000) Nearest HIP Dist from HIP (arcmin)
2026-09-20 00:00 06:59:19.28 +43:02:23.5 HIP 33738 14.23
2026-09-20 12:00 06:59:20.24 +43:02:38.9 HIP 33738 14.14
2026-09-21 00:00 06:59:21.15 +43:02:54.4 HIP 33738 14.07
2026-09-21 12:00 06:59:22.02 +43:03:10.1 HIP 33738 14.02
2026-09-22 00:00 06:59:22.84 +43:03:25.8 HIP 33738 13.98
2026-09-22 12:00 06:59:23.61 +43:03:41.7 HIP 33738 13.95
2026-09-23 00:00 06:59:24.34 +43:03:57.6 HIP 33738 13.94
2026-09-23 12:00 06:59:25.02 +43:04:13.7 HIP 33738 13.94
2026-09-24 00:00 06:59:25.65 +43:04:29.9 HIP 33738 13.96
2026-09-24 12:00 06:59:26.24 +43:04:46.1 HIP 33738 13.99
2026-09-25 00:00 06:59:26.78 +43:05:02.5 HIP 33738 14.04
2026-09-25 12:00 06:59:27.27 +43:05:18.9 HIP 33738 14.10
2026-09-26 00:00 06:59:27.72 +43:05:35.4 HIP 33738 14.17
2026-09-26 12:00 06:59:28.12 +43:05:52.1 HIP 33738 14.26
2026-09-27 00:00 06:59:28.47 +43:06:08.8 HIP 33738 14.36
2026-09-27 12:00 06:59:28.78 +43:06:25.6 HIP 33738 14.47
2026-09-28 00:00 06:59:29.04 +43:06:42.5 HIP 33738 14.60
2026-09-28 12:00 06:59:29.25 +43:06:59.5 HIP 33738 14.74
2026-09-29 00:00 06:59:29.41 +43:07:16.5 HIP 33738 14.89
2026-09-29 12:00 06:59:29.52 +43:07:33.7 HIP 33738 15.05
2026-09-30 00:00 06:59:29.59 +43:07:50.9 HIP 33738 15.22
2026-09-30 12:00 06:59:29.61 +43:08:08.2 HIP 33738 15.41
2026-10-01 00:00 06:59:29.58 +43:08:25.6 HIP 33738 15.60
2026-10-01 12:00 06:59:29.50 +43:08:43.1 HIP 33738 15.81
2026-10-02 00:00 06:59:29.38 +43:09:00.7 HIP 33738 16.02
2026-10-02 12:00 06:59:29.20 +43:09:18.3 HIP 33738 16.25
2026-10-03 00:00 06:59:28.98 +43:09:36.0 HIP 33738 16.48
2026-10-03 12:00 06:59:28.71 +43:09:53.8 HIP 33738 16.72
2026-10-04 00:00 06:59:28.39 +43:10:11.6 HIP 33738 16.98
2026-10-04 12:00 06:59:28.02 +43:10:29.5 HIP 33738 17.24
2026-10-05 00:00 06:59:27.60 +43:10:47.5 HIP 33738 17.51
2026-10-05 12:00 06:59:27.13 +43:11:05.6 HIP 33738 17.79
2026-10-06 00:00 06:59:26.61 +43:11:23.7 HIP 33738 18.07
2026-10-06 12:00 06:59:26.05 +43:11:41.9 HIP 33738 18.36
2026-10-07 00:00 06:59:25.43 +43:12:00.1 HIP 33738 18.67
2026-10-07 12:00 06:59:24.76 +43:12:18.5 HIP 33738 18.97
2026-10-08 00:00 06:59:24.05 +43:12:36.8 HIP 33738 19.29
2026-10-08 12:00 06:59:23.28 +43:12:55.3 HIP 33539 19.33
2026-10-09 00:00 06:59:22.46 +43:13:13.7 HIP 33539 19.00
2026-10-09 12:00 06:59:21.60 +43:13:32.3 HIP 33539 18.67
2026-10-10 00:00 06:59:20.68 +43:13:50.9 HIP 33539 18.32
2026-10-10 12:00 06:59:19.72 +43:14:09.5 HIP 33539 17.98
2026-10-11 00:00 06:59:18.70 +43:14:28.2 HIP 33539 17.62