| Parameter |
Value |
| Designation |
C/2013 F1 (Boattini) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2012-12-02T15:47:47.538240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:32Z |
| Obs used |
274 |
| NEO |
- |
| M1 |
15.100 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2013-04-14.0000000 |
| e |
1.00279701 |
| q (au) |
1.859992 |
| a (au) |
-664.991992 |
| i (deg) |
79.687882 |
| Ω (om, deg) |
30.122757 |
| ω (w, deg) |
92.003330 |
| M (ma, deg) |
0.007606 |
Magnitude
Scatter + Global Linear
$$
M_a = (14.724 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
14.724 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.996 |
| δ90 |
10.000 |
| 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) |
| 2026-03-26 00:00 |
11:48:01.99 |
-73:28:37.1 |
HIP 57409 |
11.02 |
| 2026-03-26 12:00 |
11:47:48.69 |
-73:28:26.0 |
HIP 57409 |
10.50 |
| 2026-03-27 00:00 |
11:47:35.41 |
-73:28:14.2 |
HIP 57409 |
10.05 |
| 2026-03-27 12:00 |
11:47:22.15 |
-73:28:02.0 |
HIP 57409 |
9.69 |
| 2026-03-28 00:00 |
11:47:08.92 |
-73:27:49.2 |
HIP 57409 |
9.41 |
| 2026-03-28 12:00 |
11:46:55.71 |
-73:27:35.9 |
HIP 57409 |
9.24 |
| 2026-03-29 00:00 |
11:46:42.53 |
-73:27:22.0 |
HIP 57409 |
9.17 |
| 2026-03-29 12:00 |
11:46:29.38 |
-73:27:07.6 |
HIP 57409 |
9.22 |
| 2026-03-30 00:00 |
11:46:16.26 |
-73:26:52.7 |
HIP 57409 |
9.37 |
| 2026-03-30 12:00 |
11:46:03.17 |
-73:26:37.3 |
HIP 57409 |
9.63 |
| 2026-03-31 00:00 |
11:45:50.11 |
-73:26:21.3 |
HIP 57409 |
9.98 |
| 2026-03-31 12:00 |
11:45:37.08 |
-73:26:04.9 |
HIP 57247 |
9.59 |
| 2026-04-01 00:00 |
11:45:24.09 |
-73:25:47.9 |
HIP 57247 |
8.84 |
| 2026-04-01 12:00 |
11:45:11.13 |
-73:25:30.4 |
HIP 57247 |
8.13 |
| 2026-04-02 00:00 |
11:44:58.21 |
-73:25:12.3 |
HIP 57247 |
7.48 |
| 2026-04-02 12:00 |
11:44:45.33 |
-73:24:53.8 |
HIP 57247 |
6.89 |
| 2026-04-03 00:00 |
11:44:32.48 |
-73:24:34.7 |
HIP 57247 |
6.39 |
| 2026-04-03 12:00 |
11:44:19.68 |
-73:24:15.2 |
HIP 57247 |
5.99 |
| 2026-04-04 00:00 |
11:44:06.92 |
-73:23:55.1 |
HIP 57247 |
5.73 |
| 2026-04-04 12:00 |
11:43:54.19 |
-73:23:34.6 |
HIP 57247 |
5.62 |
| 2026-04-05 00:00 |
11:43:41.52 |
-73:23:13.5 |
HIP 57247 |
5.67 |
| 2026-04-05 12:00 |
11:43:28.88 |
-73:22:51.9 |
HIP 57247 |
5.87 |
| 2026-04-06 00:00 |
11:43:16.30 |
-73:22:29.8 |
HIP 57247 |
6.21 |
| 2026-04-06 12:00 |
11:43:03.76 |
-73:22:07.3 |
HIP 57247 |
6.67 |
| 2026-04-07 00:00 |
11:42:51.26 |
-73:21:44.2 |
HIP 57247 |
7.22 |
| 2026-04-07 12:00 |
11:42:38.82 |
-73:21:20.7 |
HIP 57247 |
7.86 |
| 2026-04-08 00:00 |
11:42:26.43 |
-73:20:56.7 |
HIP 57247 |
8.55 |
| 2026-04-08 12:00 |
11:42:14.09 |
-73:20:32.1 |
HIP 57247 |
9.29 |
| 2026-04-09 00:00 |
11:42:01.80 |
-73:20:07.1 |
HIP 57247 |
10.06 |
| 2026-04-09 12:00 |
11:41:49.56 |
-73:19:41.7 |
HIP 57247 |
10.86 |
| 2026-04-10 00:00 |
11:41:37.38 |
-73:19:15.7 |
HIP 57247 |
11.69 |
| 2026-04-10 12:00 |
11:41:25.26 |
-73:18:49.3 |
HIP 57247 |
12.53 |
| 2026-04-11 00:00 |
11:41:13.19 |
-73:18:22.4 |
HIP 57247 |
13.39 |
| 2026-04-11 12:00 |
11:41:01.18 |
-73:17:55.0 |
HIP 57247 |
14.26 |
| 2026-04-12 00:00 |
11:40:49.23 |
-73:17:27.1 |
HIP 57247 |
15.13 |
| 2026-04-12 12:00 |
11:40:37.33 |
-73:16:58.8 |
HIP 57247 |
16.02 |
| 2026-04-13 00:00 |
11:40:25.50 |
-73:16:30.1 |
HIP 57247 |
16.92 |
| 2026-04-13 12:00 |
11:40:13.74 |
-73:16:00.8 |
HIP 56625 |
16.29 |
| 2026-04-14 00:00 |
11:40:02.03 |
-73:15:31.2 |
HIP 56625 |
15.67 |
| 2026-04-14 12:00 |
11:39:50.39 |
-73:15:01.0 |
HIP 56625 |
15.10 |
| 2026-04-15 00:00 |
11:39:38.82 |
-73:14:30.5 |
HIP 56625 |
14.58 |
| 2026-04-15 12:00 |
11:39:27.31 |
-73:13:59.4 |
HIP 56625 |
14.11 |
| 2026-04-16 00:00 |
11:39:15.87 |
-73:13:28.0 |
HIP 56625 |
13.70 |