| Parameter |
Value |
| Designation |
P/2013 T2 (Schwartz) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-06-20T16:25:47.807040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:41Z |
| Obs used |
118 |
| NEO |
- |
| M1 |
14.500 |
| K1 |
13.500 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2013-10-31.0000000 |
| e |
0.52849640 |
| q (au) |
1.599620 |
| a (au) |
3.392593 |
| i (deg) |
9.352147 |
| Ω (om, deg) |
2.629851 |
| ω (w, deg) |
342.521773 |
| M (ma, deg) |
20.869729 |
Magnitude
Scatter + Global Linear
$$
M_a = (14.012 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
14.012 |
| n |
6.000 |
| gf |
0.946 |
| gb |
-0.661 |
| k |
0.968 |
| δ90 |
7.825 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
02:45:57.47 |
+17:53:02.9 |
HIP 12784 |
24.50 |
| 2026-07-29 12:00 |
02:46:52.24 |
+18:00:07.5 |
HIP 13108 |
29.12 |
| 2026-07-30 00:00 |
02:47:46.82 |
+18:07:10.7 |
HIP 13108 |
14.58 |
| 2026-07-30 12:00 |
02:48:41.20 |
+18:14:12.4 |
HIP 13108 |
3.56 |
| 2026-07-31 00:00 |
02:49:35.37 |
+18:21:12.7 |
HIP 13108 |
15.59 |
| 2026-07-31 12:00 |
02:50:29.33 |
+18:28:11.6 |
HIP 13158 |
24.08 |
| 2026-08-01 00:00 |
02:51:23.08 |
+18:35:09.1 |
HIP 13158 |
32.25 |
| 2026-08-01 12:00 |
02:52:16.62 |
+18:42:05.1 |
HIP 13496 |
21.74 |
| 2026-08-02 00:00 |
02:53:09.95 |
+18:48:59.7 |
HIP 13496 |
14.00 |
| 2026-08-02 12:00 |
02:54:03.05 |
+18:55:52.8 |
HIP 13496 |
18.24 |
| 2026-08-03 00:00 |
02:54:55.94 |
+19:02:44.5 |
HIP 13631 |
18.40 |
| 2026-08-03 12:00 |
02:55:48.60 |
+19:09:34.8 |
HIP 13631 |
23.46 |
| 2026-08-04 00:00 |
02:56:41.04 |
+19:16:23.7 |
HIP 13855 |
24.38 |
| 2026-08-04 12:00 |
02:57:33.24 |
+19:23:11.1 |
HIP 13855 |
15.19 |
| 2026-08-05 00:00 |
02:58:25.22 |
+19:29:57.1 |
HIP 13893 |
8.31 |
| 2026-08-05 12:00 |
02:59:16.95 |
+19:36:41.7 |
HIP 13893 |
5.69 |
| 2026-08-06 00:00 |
03:00:08.45 |
+19:43:24.8 |
HIP 13893 |
19.52 |
| 2026-08-06 12:00 |
03:00:59.71 |
+19:50:06.5 |
HIP 14062 |
26.07 |
| 2026-08-07 00:00 |
03:01:50.72 |
+19:56:46.8 |
HIP 14201 |
20.22 |
| 2026-08-07 12:00 |
03:02:41.48 |
+20:03:25.6 |
HIP 14201 |
16.59 |
| 2026-08-08 00:00 |
03:03:31.99 |
+20:10:03.1 |
HIP 14203 |
11.41 |
| 2026-08-08 12:00 |
03:04:22.25 |
+20:16:39.0 |
HIP 14203 |
17.40 |
| 2026-08-09 00:00 |
03:05:12.24 |
+20:23:13.6 |
HIP 14203 |
28.92 |
| 2026-08-09 12:00 |
03:06:01.98 |
+20:29:46.7 |
HIP 14481 |
24.92 |
| 2026-08-10 00:00 |
03:06:51.45 |
+20:36:18.4 |
HIP 14481 |
15.42 |
| 2026-08-10 12:00 |
03:07:40.64 |
+20:42:48.7 |
HIP 14481 |
14.36 |
| 2026-08-11 00:00 |
03:08:29.57 |
+20:49:17.6 |
HIP 14649 |
12.35 |
| 2026-08-11 12:00 |
03:09:18.22 |
+20:55:45.0 |
HIP 14649 |
10.09 |
| 2026-08-12 00:00 |
03:10:06.59 |
+21:02:11.0 |
HIP 14727 |
14.25 |
| 2026-08-12 12:00 |
03:10:54.68 |
+21:08:35.6 |
HIP 14810 |
5.32 |
| 2026-08-13 00:00 |
03:11:42.49 |
+21:14:58.8 |
HIP 14810 |
11.26 |
| 2026-08-13 12:00 |
03:12:30.00 |
+21:21:20.6 |
HIP 14993 |
20.24 |
| 2026-08-14 00:00 |
03:13:17.22 |
+21:27:41.0 |
HIP 14993 |
11.02 |
| 2026-08-14 12:00 |
03:14:04.15 |
+21:34:00.0 |
HIP 14993 |
12.38 |
| 2026-08-15 00:00 |
03:14:50.78 |
+21:40:17.6 |
HIP 14993 |
22.34 |
| 2026-08-15 12:00 |
03:15:37.10 |
+21:46:33.8 |
HIP 14993 |
33.96 |
| 2026-08-16 00:00 |
03:16:23.13 |
+21:52:48.7 |
HIP 15038 |
41.89 |
| 2026-08-16 12:00 |
03:17:08.84 |
+21:59:02.1 |
HIP 15513 |
47.82 |
| 2026-08-17 00:00 |
03:17:54.25 |
+22:05:14.2 |
HIP 15562 |
40.86 |
| 2026-08-17 12:00 |
03:18:39.34 |
+22:11:24.9 |
HIP 15562 |
28.73 |
| 2026-08-18 00:00 |
03:19:24.11 |
+22:17:34.3 |
HIP 15562 |
16.70 |
| 2026-08-18 12:00 |
03:20:08.56 |
+22:23:42.3 |
HIP 15562 |
4.87 |
| 2026-08-19 00:00 |
03:20:52.69 |
+22:29:49.0 |
HIP 15562 |
7.34 |