| Parameter |
Value |
| Designation |
C/2010 G1 (Boattini) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-04-02T12:57:43.750080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:41Z |
| Obs used |
282 |
| NEO |
- |
| M1 |
14.100 |
| K1 |
4.500 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2010-04-11.0000000 |
| e |
0.99747618 |
| q (au) |
1.204547 |
| a (au) |
477.271106 |
| i (deg) |
78.387100 |
| Ω (om, deg) |
287.448396 |
| ω (w, deg) |
168.631492 |
| M (ma, deg) |
0.000800 |
Magnitude
Scatter + Global Linear
$$
M_a = (15.461 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
15.461 |
| n |
2.000 |
| gf |
0.999 |
| gb |
-1.000 |
| k |
0.800 |
| 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) |
| 2026-09-20 00:00 |
18:49:08.90 |
-54:52:43.2 |
HIP 92274 |
19.86 |
| 2026-09-20 12:00 |
18:49:07.62 |
-54:52:15.6 |
HIP 92274 |
19.36 |
| 2026-09-21 00:00 |
18:49:06.38 |
-54:51:47.9 |
HIP 92274 |
18.87 |
| 2026-09-21 12:00 |
18:49:05.20 |
-54:51:20.2 |
HIP 92274 |
18.38 |
| 2026-09-22 00:00 |
18:49:04.06 |
-54:50:52.4 |
HIP 92274 |
17.88 |
| 2026-09-22 12:00 |
18:49:02.97 |
-54:50:24.5 |
HIP 92274 |
17.39 |
| 2026-09-23 00:00 |
18:49:01.94 |
-54:49:56.5 |
HIP 92274 |
16.91 |
| 2026-09-23 12:00 |
18:49:00.95 |
-54:49:28.5 |
HIP 92274 |
16.42 |
| 2026-09-24 00:00 |
18:49:00.02 |
-54:49:00.5 |
HIP 92274 |
15.93 |
| 2026-09-24 12:00 |
18:48:59.13 |
-54:48:32.4 |
HIP 92274 |
15.45 |
| 2026-09-25 00:00 |
18:48:58.30 |
-54:48:04.2 |
HIP 92274 |
14.97 |
| 2026-09-25 12:00 |
18:48:57.51 |
-54:47:36.0 |
HIP 92274 |
14.49 |
| 2026-09-26 00:00 |
18:48:56.77 |
-54:47:07.7 |
HIP 92274 |
14.01 |
| 2026-09-26 12:00 |
18:48:56.09 |
-54:46:39.4 |
HIP 92274 |
13.54 |
| 2026-09-27 00:00 |
18:48:55.45 |
-54:46:11.0 |
HIP 92274 |
13.07 |
| 2026-09-27 12:00 |
18:48:54.87 |
-54:45:42.6 |
HIP 92274 |
12.60 |
| 2026-09-28 00:00 |
18:48:54.33 |
-54:45:14.1 |
HIP 92274 |
12.13 |
| 2026-09-28 12:00 |
18:48:53.85 |
-54:44:45.6 |
HIP 92274 |
11.67 |
| 2026-09-29 00:00 |
18:48:53.41 |
-54:44:17.0 |
HIP 92274 |
11.21 |
| 2026-09-29 12:00 |
18:48:53.02 |
-54:43:48.4 |
HIP 92274 |
10.75 |
| 2026-09-30 00:00 |
18:48:52.69 |
-54:43:19.8 |
HIP 92274 |
10.30 |
| 2026-09-30 12:00 |
18:48:52.40 |
-54:42:51.1 |
HIP 92274 |
9.86 |
| 2026-10-01 00:00 |
18:48:52.16 |
-54:42:22.4 |
HIP 92274 |
9.42 |
| 2026-10-01 12:00 |
18:48:51.98 |
-54:41:53.7 |
HIP 92274 |
8.99 |
| 2026-10-02 00:00 |
18:48:51.84 |
-54:41:25.0 |
HIP 92274 |
8.57 |
| 2026-10-02 12:00 |
18:48:51.76 |
-54:40:56.2 |
HIP 92274 |
8.15 |
| 2026-10-03 00:00 |
18:48:51.72 |
-54:40:27.4 |
HIP 92274 |
7.75 |
| 2026-10-03 12:00 |
18:48:51.73 |
-54:39:58.5 |
HIP 92274 |
7.36 |
| 2026-10-04 00:00 |
18:48:51.80 |
-54:39:29.7 |
HIP 92274 |
6.99 |
| 2026-10-04 12:00 |
18:48:51.91 |
-54:39:00.8 |
HIP 92274 |
6.64 |
| 2026-10-05 00:00 |
18:48:52.07 |
-54:38:31.9 |
HIP 92274 |
6.31 |
| 2026-10-05 12:00 |
18:48:52.29 |
-54:38:03.0 |
HIP 92274 |
6.00 |
| 2026-10-06 00:00 |
18:48:52.55 |
-54:37:34.0 |
HIP 92274 |
5.73 |
| 2026-10-06 12:00 |
18:48:52.86 |
-54:37:05.1 |
HIP 92274 |
5.49 |
| 2026-10-07 00:00 |
18:48:53.23 |
-54:36:36.2 |
HIP 92274 |
5.29 |
| 2026-10-07 12:00 |
18:48:53.64 |
-54:36:07.2 |
HIP 92274 |
5.14 |
| 2026-10-08 00:00 |
18:48:54.10 |
-54:35:38.2 |
HIP 92274 |
5.03 |
| 2026-10-08 12:00 |
18:48:54.61 |
-54:35:09.3 |
HIP 92274 |
4.98 |
| 2026-10-09 00:00 |
18:48:55.17 |
-54:34:40.3 |
HIP 92274 |
4.98 |
| 2026-10-09 12:00 |
18:48:55.79 |
-54:34:11.3 |
HIP 92274 |
5.04 |
| 2026-10-10 00:00 |
18:48:56.45 |
-54:33:42.3 |
HIP 92274 |
5.15 |
| 2026-10-10 12:00 |
18:48:57.16 |
-54:33:13.4 |
HIP 92274 |
5.31 |
| 2026-10-11 00:00 |
18:48:57.92 |
-54:32:44.4 |
HIP 92274 |
5.52 |