| Parameter |
Value |
| Designation |
C/2024 T3 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-03-15T06:16:49.687680Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T11:42:50Z |
| Obs used |
111 |
| NEO |
- |
| M1 |
7.900 |
| K1 |
15.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-10-10T12:57:38.505600Z |
| Discovery magnitude (MPC) |
20.06 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2025-03-15.0000000 |
| e |
0.95598107 |
| q (au) |
3.716211 |
| a (au) |
84.423027 |
| i (deg) |
53.484870 |
| Ω (om, deg) |
74.829765 |
| ω (w, deg) |
336.894853 |
| M (ma, deg) |
359.999667 |
Magnitude
Scatter + Global Linear
$$
M_a = (7.120 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
7.120 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| 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) |
| 2026-07-29 00:00 |
08:06:47.41 |
+52:47:29.6 |
HIP 39419 |
29.99 |
| 2026-07-29 12:00 |
08:07:29.71 |
+52:48:05.5 |
HIP 39760 |
31.88 |
| 2026-07-30 00:00 |
08:08:11.98 |
+52:48:41.8 |
HIP 39760 |
32.98 |
| 2026-07-30 12:00 |
08:08:54.23 |
+52:49:18.3 |
HIP 40071 |
32.56 |
| 2026-07-31 00:00 |
08:09:36.47 |
+52:49:55.2 |
HIP 40071 |
28.48 |
| 2026-07-31 12:00 |
08:10:18.68 |
+52:50:32.5 |
HIP 40071 |
25.36 |
| 2026-08-01 00:00 |
08:11:00.86 |
+52:51:10.0 |
HIP 40071 |
23.59 |
| 2026-08-01 12:00 |
08:11:43.02 |
+52:51:47.9 |
HIP 40071 |
23.46 |
| 2026-08-02 00:00 |
08:12:25.16 |
+52:52:26.2 |
HIP 40402 |
22.82 |
| 2026-08-02 12:00 |
08:13:07.28 |
+52:53:04.8 |
HIP 40402 |
16.47 |
| 2026-08-03 00:00 |
08:13:49.37 |
+52:53:43.7 |
HIP 40402 |
10.16 |
| 2026-08-03 12:00 |
08:14:31.43 |
+52:54:23.0 |
HIP 40402 |
4.07 |
| 2026-08-04 00:00 |
08:15:13.47 |
+52:55:02.7 |
HIP 40402 |
3.34 |
| 2026-08-04 12:00 |
08:15:55.48 |
+52:55:42.8 |
HIP 40402 |
9.32 |
| 2026-08-05 00:00 |
08:16:37.47 |
+52:56:23.2 |
HIP 40602 |
6.83 |
| 2026-08-05 12:00 |
08:17:19.43 |
+52:57:04.0 |
HIP 40602 |
1.56 |
| 2026-08-06 00:00 |
08:18:01.36 |
+52:57:45.2 |
HIP 40602 |
6.24 |
| 2026-08-06 12:00 |
08:18:43.26 |
+52:58:26.8 |
HIP 40602 |
12.50 |
| 2026-08-07 00:00 |
08:19:25.13 |
+52:59:08.7 |
HIP 40849 |
14.19 |
| 2026-08-07 12:00 |
08:20:06.97 |
+52:59:51.1 |
HIP 40849 |
12.00 |
| 2026-08-08 00:00 |
08:20:48.78 |
+53:00:33.9 |
HIP 40849 |
12.89 |
| 2026-08-08 12:00 |
08:21:30.56 |
+53:01:17.1 |
HIP 40849 |
16.37 |
| 2026-08-09 00:00 |
08:22:12.30 |
+53:02:00.8 |
HIP 41138 |
13.00 |
| 2026-08-09 12:00 |
08:22:54.02 |
+53:02:44.8 |
HIP 41138 |
7.25 |
| 2026-08-10 00:00 |
08:23:35.69 |
+53:03:29.3 |
HIP 41138 |
4.02 |
| 2026-08-10 12:00 |
08:24:17.34 |
+53:04:14.2 |
HIP 41138 |
7.71 |
| 2026-08-11 00:00 |
08:24:58.95 |
+53:04:59.6 |
HIP 41152 |
13.37 |
| 2026-08-11 12:00 |
08:25:40.52 |
+53:05:45.5 |
HIP 41152 |
18.36 |
| 2026-08-12 00:00 |
08:26:22.06 |
+53:06:31.7 |
HIP 41152 |
23.96 |
| 2026-08-12 12:00 |
08:27:03.56 |
+53:07:18.5 |
HIP 41507 |
21.56 |
| 2026-08-13 00:00 |
08:27:45.02 |
+53:08:05.7 |
HIP 41507 |
19.40 |
| 2026-08-13 12:00 |
08:28:26.44 |
+53:08:53.4 |
HIP 41507 |
19.12 |
| 2026-08-14 00:00 |
08:29:07.82 |
+53:09:41.6 |
HIP 41805 |
20.56 |
| 2026-08-14 12:00 |
08:29:49.16 |
+53:10:30.2 |
HIP 41805 |
14.57 |
| 2026-08-15 00:00 |
08:30:30.45 |
+53:11:19.4 |
HIP 41805 |
8.97 |
| 2026-08-15 12:00 |
08:31:11.71 |
+53:12:09.0 |
HIP 41805 |
5.16 |
| 2026-08-16 00:00 |
08:31:52.92 |
+53:12:59.2 |
HIP 41805 |
7.12 |
| 2026-08-16 12:00 |
08:32:34.09 |
+53:13:49.8 |
HIP 41894 |
6.93 |
| 2026-08-17 00:00 |
08:33:15.21 |
+53:14:41.0 |
HIP 41894 |
9.99 |
| 2026-08-17 12:00 |
08:33:56.29 |
+53:15:32.7 |
HIP 41894 |
15.12 |
| 2026-08-18 00:00 |
08:34:37.32 |
+53:16:24.9 |
HIP 41894 |
20.85 |
| 2026-08-18 12:00 |
08:35:18.31 |
+53:17:17.6 |
HIP 42167 |
26.60 |
| 2026-08-19 00:00 |
08:35:59.25 |
+53:18:10.8 |
HIP 42372 |
22.14 |