| Parameter |
Value |
| Designation |
C/2010 F1 (Boattini) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2009-11-10T13:33:39.127680Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:41Z |
| Obs used |
301 |
| NEO |
- |
| M1 |
7.000 |
| K1 |
15.750 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2010-04-02.0000000 |
| e |
0.94753492 |
| q (au) |
3.587530 |
| a (au) |
68.379381 |
| i (deg) |
64.935721 |
| Ω (om, deg) |
344.389791 |
| ω (w, deg) |
127.512149 |
| M (ma, deg) |
0.248275 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.031 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.031 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.999 |
| 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
Residuals (Piecewise)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| Start (UTC) |
End (UTC) |
a |
b |
| 2010-02-20 |
2012-07-27 |
-25.1690 |
+14.600 |
log10 r = log10(heliocentric distance / AU), Δ = geocentric distance (AU)
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
12:05:31.69 |
-84:54:29.2 |
HIP 59731 |
15.32 |
| 2026-07-29 12:00 |
12:05:54.79 |
-84:53:49.4 |
HIP 59731 |
15.33 |
| 2026-07-30 00:00 |
12:06:18.06 |
-84:53:09.8 |
HIP 59731 |
15.38 |
| 2026-07-30 12:00 |
12:06:41.49 |
-84:52:30.5 |
HIP 59731 |
15.47 |
| 2026-07-31 00:00 |
12:07:05.07 |
-84:51:51.4 |
HIP 59731 |
15.59 |
| 2026-07-31 12:00 |
12:07:28.81 |
-84:51:12.5 |
HIP 59731 |
15.75 |
| 2026-08-01 00:00 |
12:07:52.71 |
-84:50:33.9 |
HIP 59731 |
15.95 |
| 2026-08-01 12:00 |
12:08:16.76 |
-84:49:55.6 |
HIP 59731 |
16.18 |
| 2026-08-02 00:00 |
12:08:40.96 |
-84:49:17.5 |
HIP 59731 |
16.44 |
| 2026-08-02 12:00 |
12:09:05.31 |
-84:48:39.6 |
HIP 59731 |
16.73 |
| 2026-08-03 00:00 |
12:09:29.82 |
-84:48:02.0 |
HIP 59731 |
17.06 |
| 2026-08-03 12:00 |
12:09:54.47 |
-84:47:24.7 |
HIP 59731 |
17.41 |
| 2026-08-04 00:00 |
12:10:19.26 |
-84:46:47.6 |
HIP 59731 |
17.78 |
| 2026-08-04 12:00 |
12:10:44.21 |
-84:46:10.7 |
HIP 59731 |
18.18 |
| 2026-08-05 00:00 |
12:11:09.30 |
-84:45:34.1 |
HIP 59731 |
18.60 |
| 2026-08-05 12:00 |
12:11:34.53 |
-84:44:57.8 |
HIP 59731 |
19.04 |
| 2026-08-06 00:00 |
12:11:59.90 |
-84:44:21.8 |
HIP 59731 |
19.51 |
| 2026-08-06 12:00 |
12:12:25.41 |
-84:43:46.0 |
HIP 59731 |
19.99 |
| 2026-08-07 00:00 |
12:12:51.06 |
-84:43:10.4 |
HIP 59731 |
20.48 |
| 2026-08-07 12:00 |
12:13:16.85 |
-84:42:35.2 |
HIP 59731 |
21.00 |
| 2026-08-08 00:00 |
12:13:42.77 |
-84:42:00.2 |
HIP 59731 |
21.52 |
| 2026-08-08 12:00 |
12:14:08.83 |
-84:41:25.5 |
HIP 60297 |
21.79 |
| 2026-08-09 00:00 |
12:14:35.03 |
-84:40:51.0 |
HIP 60297 |
22.04 |
| 2026-08-09 12:00 |
12:15:01.35 |
-84:40:16.8 |
HIP 60297 |
22.30 |
| 2026-08-10 00:00 |
12:15:27.81 |
-84:39:42.9 |
HIP 59928 |
22.49 |
| 2026-08-10 12:00 |
12:15:54.40 |
-84:39:09.3 |
HIP 59928 |
21.85 |
| 2026-08-11 00:00 |
12:16:21.12 |
-84:38:36.0 |
HIP 59928 |
21.24 |
| 2026-08-11 12:00 |
12:16:47.96 |
-84:38:02.9 |
HIP 59928 |
20.64 |
| 2026-08-12 00:00 |
12:17:14.93 |
-84:37:30.1 |
HIP 59928 |
20.07 |
| 2026-08-12 12:00 |
12:17:42.02 |
-84:36:57.6 |
HIP 59928 |
19.53 |
| 2026-08-13 00:00 |
12:18:09.24 |
-84:36:25.4 |
HIP 59928 |
19.01 |
| 2026-08-13 12:00 |
12:18:36.58 |
-84:35:53.5 |
HIP 59928 |
18.52 |
| 2026-08-14 00:00 |
12:19:04.04 |
-84:35:21.8 |
HIP 59928 |
18.06 |
| 2026-08-14 12:00 |
12:19:31.61 |
-84:34:50.5 |
HIP 59928 |
17.64 |
| 2026-08-15 00:00 |
12:19:59.31 |
-84:34:19.4 |
HIP 59928 |
17.25 |
| 2026-08-15 12:00 |
12:20:27.12 |
-84:33:48.6 |
HIP 59928 |
16.91 |
| 2026-08-16 00:00 |
12:20:55.04 |
-84:33:18.1 |
HIP 59928 |
16.60 |
| 2026-08-16 12:00 |
12:21:23.08 |
-84:32:47.9 |
HIP 59928 |
16.34 |
| 2026-08-17 00:00 |
12:21:51.23 |
-84:32:18.1 |
HIP 59928 |
16.13 |
| 2026-08-17 12:00 |
12:22:19.50 |
-84:31:48.5 |
HIP 59928 |
15.97 |
| 2026-08-18 00:00 |
12:22:47.87 |
-84:31:19.2 |
HIP 59928 |
15.85 |
| 2026-08-18 12:00 |
12:23:16.35 |
-84:30:50.2 |
HIP 59928 |
15.79 |
| 2026-08-19 00:00 |
12:23:44.93 |
-84:30:21.4 |
HIP 59928 |
15.78 |