| Parameter |
Value |
| Designation |
136P/Mueller 3 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-05-30T21:09:59.175360Z |
| Orbit solution date (soln_date, UTC) |
2026-03-09T08:48:34Z |
| Obs used |
716 |
| NEO |
- |
| M1 |
8.500 |
| K1 |
17.250 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2017-05-25.0000000 |
| e |
0.29112782 |
| q (au) |
2.978613 |
| a (au) |
4.201904 |
| i (deg) |
9.415795 |
| Ω (om, deg) |
137.446331 |
| ω (w, deg) |
225.107350 |
| M (ma, deg) |
41.093409 |
Magnitude
Scatter + Global Linear
$$
M_a = (14.720 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
14.720 |
| n |
2.000 |
| gf |
0.917 |
| gb |
-0.789 |
| k |
0.998 |
| δ90 |
6.385 |
| 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 |
04:46:17.29 |
+15:28:13.9 |
HIP 22203 |
3.14 |
| 2026-03-26 12:00 |
04:46:45.04 |
+15:30:11.4 |
HIP 22203 |
4.00 |
| 2026-03-27 00:00 |
04:47:12.92 |
+15:32:08.3 |
HIP 22203 |
10.95 |
| 2026-03-27 12:00 |
04:47:40.94 |
+15:34:04.9 |
HIP 22203 |
17.96 |
| 2026-03-28 00:00 |
04:48:09.10 |
+15:36:01.0 |
HIP 22376 |
20.33 |
| 2026-03-28 12:00 |
04:48:37.38 |
+15:37:56.7 |
HIP 22376 |
15.10 |
| 2026-03-29 00:00 |
04:49:05.80 |
+15:39:51.9 |
HIP 22376 |
11.96 |
| 2026-03-29 12:00 |
04:49:34.34 |
+15:41:46.6 |
HIP 22422 |
11.56 |
| 2026-03-30 00:00 |
04:50:03.01 |
+15:43:40.9 |
HIP 22510 |
9.31 |
| 2026-03-30 12:00 |
04:50:31.81 |
+15:45:34.7 |
HIP 22510 |
2.65 |
| 2026-03-31 00:00 |
04:51:00.73 |
+15:47:28.0 |
HIP 22510 |
5.56 |
| 2026-03-31 12:00 |
04:51:29.78 |
+15:49:20.9 |
HIP 22568 |
3.64 |
| 2026-04-01 00:00 |
04:51:58.95 |
+15:51:13.3 |
HIP 22568 |
8.03 |
| 2026-04-01 12:00 |
04:52:28.24 |
+15:53:05.1 |
HIP 22568 |
14.89 |
| 2026-04-02 00:00 |
04:52:57.66 |
+15:54:56.5 |
HIP 22773 |
13.98 |
| 2026-04-02 12:00 |
04:53:27.19 |
+15:56:47.4 |
HIP 22773 |
6.90 |
| 2026-04-03 00:00 |
04:53:56.84 |
+15:58:37.8 |
HIP 22773 |
2.73 |
| 2026-04-03 12:00 |
04:54:26.61 |
+16:00:27.7 |
HIP 22773 |
8.72 |
| 2026-04-04 00:00 |
04:54:56.50 |
+16:02:17.1 |
HIP 22773 |
15.95 |
| 2026-04-04 12:00 |
04:55:26.50 |
+16:04:05.9 |
HIP 22846 |
20.55 |
| 2026-04-05 00:00 |
04:55:56.62 |
+16:05:54.3 |
HIP 22967 |
19.02 |
| 2026-04-05 12:00 |
04:56:26.85 |
+16:07:42.1 |
HIP 22967 |
18.90 |
| 2026-04-06 00:00 |
04:56:57.19 |
+16:09:29.4 |
HIP 22967 |
21.55 |
| 2026-04-06 12:00 |
04:57:27.65 |
+16:11:16.1 |
HIP 23094 |
25.61 |
| 2026-04-07 00:00 |
04:57:58.22 |
+16:13:02.4 |
HIP 23094 |
25.32 |
| 2026-04-07 12:00 |
04:58:28.89 |
+16:14:48.1 |
HIP 23214 |
26.83 |
| 2026-04-08 00:00 |
04:58:59.68 |
+16:16:33.2 |
HIP 23214 |
24.06 |
| 2026-04-08 12:00 |
04:59:30.57 |
+16:18:17.8 |
HIP 23214 |
23.52 |
| 2026-04-09 00:00 |
05:00:01.58 |
+16:20:01.8 |
HIP 23214 |
25.37 |
| 2026-04-09 12:00 |
05:00:32.68 |
+16:21:45.3 |
HIP 23423 |
23.88 |
| 2026-04-10 00:00 |
05:01:03.90 |
+16:23:28.2 |
HIP 23423 |
18.49 |
| 2026-04-10 12:00 |
05:01:35.21 |
+16:25:10.6 |
HIP 23423 |
15.21 |
| 2026-04-11 00:00 |
05:02:06.64 |
+16:26:52.4 |
HIP 23423 |
15.46 |
| 2026-04-11 12:00 |
05:02:38.16 |
+16:28:33.6 |
HIP 23423 |
19.14 |
| 2026-04-12 00:00 |
05:03:09.78 |
+16:30:14.3 |
HIP 23423 |
24.78 |
| 2026-04-12 12:00 |
05:03:41.51 |
+16:31:54.3 |
HIP 23423 |
31.36 |
| 2026-04-13 00:00 |
05:04:13.33 |
+16:33:33.8 |
HIP 23574 |
33.99 |
| 2026-04-13 12:00 |
05:04:45.26 |
+16:35:12.7 |
HIP 23574 |
33.67 |
| 2026-04-14 00:00 |
05:05:17.28 |
+16:36:51.0 |
HIP 23807 |
28.02 |
| 2026-04-14 12:00 |
05:05:49.40 |
+16:38:28.7 |
HIP 23810 |
20.50 |
| 2026-04-15 00:00 |
05:06:21.61 |
+16:40:05.8 |
HIP 23810 |
13.35 |
| 2026-04-15 12:00 |
05:06:53.92 |
+16:41:42.2 |
HIP 23810 |
7.79 |
| 2026-04-16 00:00 |
05:07:26.33 |
+16:43:18.1 |
HIP 23810 |
8.27 |