| Parameter |
Value |
| Designation |
C/2010 J1 (Boattini) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-02-04T19:40:22.028160Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:43Z |
| Obs used |
605 |
| NEO |
- |
| M1 |
11.400 |
| K1 |
15.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2010-05-23.0000000 |
| e |
0.95382789 |
| q (au) |
1.695658 |
| a (au) |
36.724723 |
| i (deg) |
134.384945 |
| Ω (om, deg) |
254.813387 |
| ω (w, deg) |
333.109117 |
| M (ma, deg) |
0.474658 |
Magnitude
Scatter + Global Linear
$$
M_a = (10.988 + 5.711\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
10.988 |
| n |
5.711 |
| gf |
0.973 |
| gb |
-0.502 |
| k |
1.000 |
| δ90 |
9.986 |
| 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) |
| 2026-06-01 00:00 |
07:59:26.17 |
+52:24:15.7 |
HIP 38952 |
31.33 |
| 2026-06-01 12:00 |
07:59:29.86 |
+52:23:46.5 |
HIP 38952 |
31.99 |
| 2026-06-02 00:00 |
07:59:33.58 |
+52:23:17.4 |
HIP 38952 |
32.65 |
| 2026-06-02 12:00 |
07:59:37.34 |
+52:22:48.4 |
HIP 38952 |
33.32 |
| 2026-06-03 00:00 |
07:59:41.13 |
+52:22:19.5 |
HIP 38952 |
33.99 |
| 2026-06-03 12:00 |
07:59:44.96 |
+52:21:50.7 |
HIP 38952 |
34.67 |
| 2026-06-04 00:00 |
07:59:48.81 |
+52:21:22.1 |
HIP 38952 |
35.35 |
| 2026-06-04 12:00 |
07:59:52.70 |
+52:20:53.5 |
HIP 38952 |
36.03 |
| 2026-06-05 00:00 |
07:59:56.63 |
+52:20:25.1 |
HIP 38952 |
36.72 |
| 2026-06-05 12:00 |
08:00:00.58 |
+52:19:56.9 |
HIP 39179 |
37.12 |
| 2026-06-06 00:00 |
08:00:04.57 |
+52:19:28.7 |
HIP 39179 |
36.55 |
| 2026-06-06 12:00 |
08:00:08.59 |
+52:19:00.7 |
HIP 39179 |
35.98 |
| 2026-06-07 00:00 |
08:00:12.64 |
+52:18:32.8 |
HIP 39179 |
35.42 |
| 2026-06-07 12:00 |
08:00:16.72 |
+52:18:05.0 |
HIP 39179 |
34.87 |
| 2026-06-08 00:00 |
08:00:20.83 |
+52:17:37.4 |
HIP 39179 |
34.33 |
| 2026-06-08 12:00 |
08:00:24.97 |
+52:17:09.9 |
HIP 39179 |
33.80 |
| 2026-06-09 00:00 |
08:00:29.14 |
+52:16:42.6 |
HIP 39179 |
33.29 |
| 2026-06-09 12:00 |
08:00:33.34 |
+52:16:15.3 |
HIP 39179 |
32.79 |
| 2026-06-10 00:00 |
08:00:37.57 |
+52:15:48.3 |
HIP 39179 |
32.30 |
| 2026-06-10 12:00 |
08:00:41.83 |
+52:15:21.3 |
HIP 39179 |
31.82 |
| 2026-06-11 00:00 |
08:00:46.12 |
+52:14:54.5 |
HIP 39179 |
31.36 |
| 2026-06-11 12:00 |
08:00:50.44 |
+52:14:27.8 |
HIP 39179 |
30.92 |
| 2026-06-12 00:00 |
08:00:54.78 |
+52:14:01.3 |
HIP 39179 |
30.49 |
| 2026-06-12 12:00 |
08:00:59.16 |
+52:13:35.0 |
HIP 39179 |
30.08 |
| 2026-06-13 00:00 |
08:01:03.56 |
+52:13:08.7 |
HIP 39179 |
29.69 |
| 2026-06-13 12:00 |
08:01:07.98 |
+52:12:42.6 |
HIP 39179 |
29.32 |
| 2026-06-14 00:00 |
08:01:12.44 |
+52:12:16.7 |
HIP 39179 |
28.98 |
| 2026-06-14 12:00 |
08:01:16.92 |
+52:11:50.9 |
HIP 39179 |
28.65 |
| 2026-06-15 00:00 |
08:01:21.43 |
+52:11:25.3 |
HIP 39179 |
28.35 |
| 2026-06-15 12:00 |
08:01:25.96 |
+52:10:59.9 |
HIP 39179 |
28.07 |
| 2026-06-16 00:00 |
08:01:30.52 |
+52:10:34.6 |
HIP 39179 |
27.81 |
| 2026-06-16 12:00 |
08:01:35.10 |
+52:10:09.4 |
HIP 39179 |
27.58 |
| 2026-06-17 00:00 |
08:01:39.71 |
+52:09:44.4 |
HIP 39179 |
27.38 |
| 2026-06-17 12:00 |
08:01:44.34 |
+52:09:19.6 |
HIP 39179 |
27.20 |
| 2026-06-18 00:00 |
08:01:48.99 |
+52:08:54.9 |
HIP 39179 |
27.05 |
| 2026-06-18 12:00 |
08:01:53.67 |
+52:08:30.4 |
HIP 39295 |
26.82 |
| 2026-06-19 00:00 |
08:01:58.38 |
+52:08:06.1 |
HIP 39295 |
26.38 |
| 2026-06-19 12:00 |
08:02:03.10 |
+52:07:41.9 |
HIP 39295 |
25.96 |
| 2026-06-20 00:00 |
08:02:07.85 |
+52:07:17.9 |
HIP 39295 |
25.56 |
| 2026-06-20 12:00 |
08:02:12.62 |
+52:06:54.0 |
HIP 39549 |
24.91 |
| 2026-06-21 00:00 |
08:02:17.41 |
+52:06:30.4 |
HIP 39549 |
24.23 |
| 2026-06-21 12:00 |
08:02:22.22 |
+52:06:06.9 |
HIP 39549 |
23.55 |
| 2026-06-22 00:00 |
08:02:27.05 |
+52:05:43.5 |
HIP 39549 |
22.88 |