| Parameter |
Value |
| Designation |
P/2012 T3 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2012-04-27T22:19:16.250880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:23Z |
| Obs used |
34 |
| NEO |
- |
| M1 |
14.900 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2012-10-15.0000000 |
| e |
0.60453490 |
| q (au) |
2.383874 |
| a (au) |
6.028027 |
| i (deg) |
9.509712 |
| Ω (om, deg) |
114.259697 |
| ω (w, deg) |
196.802529 |
| M (ma, deg) |
11.325800 |
Magnitude
Scatter + Global Linear
$$
M_a = (16.125 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
16.125 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.654 |
| 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) |
| 2026-03-26 00:00 |
16:16:23.16 |
-10:43:06.7 |
HIP 79663 |
24.34 |
| 2026-03-26 12:00 |
16:16:28.33 |
-10:42:17.9 |
HIP 79663 |
25.75 |
| 2026-03-27 00:00 |
16:16:33.24 |
-10:41:28.5 |
HIP 79663 |
27.14 |
| 2026-03-27 12:00 |
16:16:37.88 |
-10:40:38.6 |
HIP 79663 |
28.50 |
| 2026-03-28 00:00 |
16:16:42.24 |
-10:39:48.1 |
HIP 79749 |
28.47 |
| 2026-03-28 12:00 |
16:16:46.33 |
-10:38:57.0 |
HIP 79749 |
27.69 |
| 2026-03-29 00:00 |
16:16:50.15 |
-10:38:05.3 |
HIP 79749 |
26.94 |
| 2026-03-29 12:00 |
16:16:53.69 |
-10:37:13.1 |
HIP 79749 |
26.20 |
| 2026-03-30 00:00 |
16:16:56.96 |
-10:36:20.4 |
HIP 79749 |
25.48 |
| 2026-03-30 12:00 |
16:16:59.95 |
-10:35:27.1 |
HIP 79749 |
24.78 |
| 2026-03-31 00:00 |
16:17:02.66 |
-10:34:33.3 |
HIP 79749 |
24.08 |
| 2026-03-31 12:00 |
16:17:05.10 |
-10:33:39.0 |
HIP 79749 |
23.38 |
| 2026-04-01 00:00 |
16:17:07.25 |
-10:32:44.1 |
HIP 79749 |
22.69 |
| 2026-04-01 12:00 |
16:17:09.13 |
-10:31:48.8 |
HIP 79749 |
21.99 |
| 2026-04-02 00:00 |
16:17:10.73 |
-10:30:52.9 |
HIP 79749 |
21.28 |
| 2026-04-02 12:00 |
16:17:12.04 |
-10:29:56.6 |
HIP 79749 |
20.56 |
| 2026-04-03 00:00 |
16:17:13.07 |
-10:28:59.8 |
HIP 79749 |
19.82 |
| 2026-04-03 12:00 |
16:17:13.83 |
-10:28:02.6 |
HIP 79749 |
19.07 |
| 2026-04-04 00:00 |
16:17:14.29 |
-10:27:04.8 |
HIP 79749 |
18.29 |
| 2026-04-04 12:00 |
16:17:14.48 |
-10:26:06.7 |
HIP 79749 |
17.49 |
| 2026-04-05 00:00 |
16:17:14.38 |
-10:25:08.1 |
HIP 79749 |
16.66 |
| 2026-04-05 12:00 |
16:17:13.99 |
-10:24:09.0 |
HIP 79749 |
15.80 |
| 2026-04-06 00:00 |
16:17:13.32 |
-10:23:09.6 |
HIP 79749 |
14.91 |
| 2026-04-06 12:00 |
16:17:12.36 |
-10:22:09.8 |
HIP 79749 |
13.98 |
| 2026-04-07 00:00 |
16:17:11.11 |
-10:21:09.5 |
HIP 79749 |
13.02 |
| 2026-04-07 12:00 |
16:17:09.58 |
-10:20:08.9 |
HIP 79749 |
12.02 |
| 2026-04-08 00:00 |
16:17:07.76 |
-10:19:07.9 |
HIP 79749 |
10.97 |
| 2026-04-08 12:00 |
16:17:05.65 |
-10:18:06.5 |
HIP 79749 |
9.89 |
| 2026-04-09 00:00 |
16:17:03.25 |
-10:17:04.8 |
HIP 79749 |
8.77 |
| 2026-04-09 12:00 |
16:17:00.57 |
-10:16:02.7 |
HIP 79749 |
7.60 |
| 2026-04-10 00:00 |
16:16:57.59 |
-10:15:00.3 |
HIP 79749 |
6.39 |
| 2026-04-10 12:00 |
16:16:54.33 |
-10:13:57.6 |
HIP 79749 |
5.16 |
| 2026-04-11 00:00 |
16:16:50.78 |
-10:12:54.6 |
HIP 79749 |
3.90 |
| 2026-04-11 12:00 |
16:16:46.94 |
-10:11:51.3 |
HIP 79749 |
2.68 |
| 2026-04-12 00:00 |
16:16:42.81 |
-10:10:47.8 |
HIP 79749 |
1.72 |
| 2026-04-12 12:00 |
16:16:38.39 |
-10:09:44.0 |
HIP 79749 |
1.72 |
| 2026-04-13 00:00 |
16:16:33.68 |
-10:08:39.9 |
HIP 79749 |
2.78 |
| 2026-04-13 12:00 |
16:16:28.68 |
-10:07:35.6 |
HIP 79749 |
4.21 |
| 2026-04-14 00:00 |
16:16:23.39 |
-10:06:31.0 |
HIP 79749 |
5.79 |
| 2026-04-14 12:00 |
16:16:17.82 |
-10:05:26.3 |
HIP 79749 |
7.46 |
| 2026-04-15 00:00 |
16:16:11.96 |
-10:04:21.4 |
HIP 79749 |
9.21 |
| 2026-04-15 12:00 |
16:16:05.81 |
-10:03:16.3 |
HIP 79749 |
11.03 |
| 2026-04-16 00:00 |
16:15:59.38 |
-10:02:11.0 |
HIP 79749 |
12.91 |