P/2010 T2 (PANSTARRS)
| Parameter |
Value |
| Designation |
P/2010 T2 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2011-07-09T19:48:58.587840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:46Z |
| Obs used |
33 |
| NEO |
- |
| M1 |
7.300 |
| K1 |
17.500 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2010-11-12.0000000 |
| e |
0.32322085 |
| q (au) |
3.753596 |
| a (au) |
5.546265 |
| i (deg) |
8.010784 |
| Ω (om, deg) |
59.649297 |
| ω (w, deg) |
355.941770 |
| M (ma, deg) |
341.903321 |
Magnitude
Scatter + Global Linear
$$
M_a = (7.675 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
7.675 |
| n |
6.000 |
| gf |
0.972 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
9.959 |
| 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) |
| 2026-02-03 00:00 |
09:36:52.38 |
+24:24:24.2 |
HIP 47247 |
20.53 |
| 2026-02-03 12:00 |
09:36:35.31 |
+24:25:54.2 |
HIP 47247 |
22.21 |
| 2026-02-04 00:00 |
09:36:18.20 |
+24:27:23.4 |
HIP 47247 |
24.49 |
| 2026-02-04 12:00 |
09:36:01.06 |
+24:28:52.0 |
HIP 47247 |
27.24 |
| 2026-02-05 00:00 |
09:35:43.89 |
+24:30:19.9 |
HIP 47026 |
25.75 |
| 2026-02-05 12:00 |
09:35:26.69 |
+24:31:47.1 |
HIP 47026 |
23.16 |
| 2026-02-06 00:00 |
09:35:09.47 |
+24:33:13.6 |
HIP 47026 |
21.10 |
| 2026-02-06 12:00 |
09:34:52.23 |
+24:34:39.3 |
HIP 47026 |
19.73 |
| 2026-02-07 00:00 |
09:34:34.97 |
+24:36:04.2 |
HIP 46935 |
18.37 |
| 2026-02-07 12:00 |
09:34:17.69 |
+24:37:28.4 |
HIP 46935 |
15.59 |
| 2026-02-08 00:00 |
09:34:00.41 |
+24:38:51.8 |
HIP 46935 |
13.55 |
| 2026-02-08 12:00 |
09:33:43.12 |
+24:40:14.4 |
HIP 46935 |
12.62 |
| 2026-02-09 00:00 |
09:33:25.82 |
+24:41:36.2 |
HIP 46935 |
13.03 |
| 2026-02-09 12:00 |
09:33:08.53 |
+24:42:57.1 |
HIP 46935 |
14.67 |
| 2026-02-10 00:00 |
09:32:51.23 |
+24:44:17.2 |
HIP 46935 |
17.18 |
| 2026-02-10 12:00 |
09:32:33.95 |
+24:45:36.4 |
HIP 46935 |
20.23 |
| 2026-02-11 00:00 |
09:32:16.67 |
+24:46:54.8 |
HIP 46689 |
22.56 |
| 2026-02-11 12:00 |
09:31:59.41 |
+24:48:12.2 |
HIP 46689 |
18.97 |
| 2026-02-12 00:00 |
09:31:42.17 |
+24:49:28.7 |
HIP 46689 |
15.65 |
| 2026-02-12 12:00 |
09:31:24.94 |
+24:50:44.4 |
HIP 46689 |
12.82 |
| 2026-02-13 00:00 |
09:31:07.74 |
+24:51:59.1 |
HIP 46689 |
10.85 |
| 2026-02-13 12:00 |
09:30:50.57 |
+24:53:12.8 |
HIP 46689 |
10.25 |
| 2026-02-14 00:00 |
09:30:33.43 |
+24:54:25.6 |
HIP 46689 |
11.21 |
| 2026-02-14 12:00 |
09:30:16.32 |
+24:55:37.4 |
HIP 46689 |
13.40 |
| 2026-02-15 00:00 |
09:29:59.25 |
+24:56:48.2 |
HIP 46595 |
16.04 |
| 2026-02-15 12:00 |
09:29:42.23 |
+24:57:58.0 |
HIP 46595 |
17.95 |
| 2026-02-16 00:00 |
09:29:25.24 |
+24:59:06.8 |
HIP 46595 |
20.47 |
| 2026-02-16 12:00 |
09:29:08.31 |
+25:00:14.6 |
HIP 46405 |
23.26 |
| 2026-02-17 00:00 |
09:28:51.43 |
+25:01:21.4 |
HIP 46405 |
19.64 |
| 2026-02-17 12:00 |
09:28:34.60 |
+25:02:27.1 |
HIP 46405 |
16.22 |
| 2026-02-18 00:00 |
09:28:17.83 |
+25:03:31.8 |
HIP 46405 |
13.12 |
| 2026-02-18 12:00 |
09:28:01.12 |
+25:04:35.4 |
HIP 46405 |
10.63 |
| 2026-02-19 00:00 |
09:27:44.48 |
+25:05:37.9 |
HIP 46405 |
9.21 |
| 2026-02-19 12:00 |
09:27:27.91 |
+25:06:39.3 |
HIP 46405 |
9.34 |
| 2026-02-20 00:00 |
09:27:11.41 |
+25:07:39.6 |
HIP 46405 |
10.96 |
| 2026-02-20 12:00 |
09:26:54.99 |
+25:08:38.9 |
HIP 46405 |
13.51 |
| 2026-02-21 00:00 |
09:26:38.64 |
+25:09:37.0 |
HIP 46405 |
16.56 |
| 2026-02-21 12:00 |
09:26:22.37 |
+25:10:34.0 |
HIP 46180 |
18.88 |
| 2026-02-22 00:00 |
09:26:06.20 |
+25:11:29.9 |
HIP 46180 |
15.12 |
| 2026-02-22 12:00 |
09:25:50.10 |
+25:12:24.6 |
HIP 46180 |
11.40 |
| 2026-02-23 00:00 |
09:25:34.10 |
+25:13:18.2 |
HIP 46180 |
7.74 |
| 2026-02-23 12:00 |
09:25:18.20 |
+25:14:10.7 |
HIP 46180 |
4.19 |
| 2026-02-24 00:00 |
09:25:02.39 |
+25:15:02.0 |
HIP 46180 |
1.64 |