| Parameter |
Value |
| Designation |
33P/Daniel |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-08-22T10:20:16.540800Z |
| Orbit solution date (soln_date, UTC) |
2025-05-09T00:48:39Z |
| Obs used |
773 |
| NEO |
- |
| M1 |
15.500 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2016-01-24.0000000 |
| e |
0.46319414 |
| q (au) |
2.160176 |
| a (au) |
4.024129 |
| i (deg) |
22.393082 |
| Ω (om, deg) |
66.494295 |
| ω (w, deg) |
19.055486 |
| M (ma, deg) |
334.185460 |
Magnitude
Scatter + Global Linear
$$
M_a = (17.156 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
17.156 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.667 |
| k |
0.800 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
14:09:08.90 |
-03:13:18.6 |
HIP 69152 |
10.12 |
| 2026-09-20 12:00 |
14:09:32.74 |
-03:16:40.5 |
HIP 69152 |
13.19 |
| 2026-09-21 00:00 |
14:09:56.65 |
-03:20:02.1 |
HIP 69152 |
18.42 |
| 2026-09-21 12:00 |
14:10:20.60 |
-03:23:23.4 |
HIP 69328 |
15.26 |
| 2026-09-22 00:00 |
14:10:44.61 |
-03:26:44.3 |
HIP 69328 |
11.03 |
| 2026-09-22 12:00 |
14:11:08.68 |
-03:30:05.0 |
HIP 69328 |
10.23 |
| 2026-09-23 00:00 |
14:11:32.80 |
-03:33:25.3 |
HIP 69328 |
13.49 |
| 2026-09-23 12:00 |
14:11:56.97 |
-03:36:45.4 |
HIP 69328 |
18.82 |
| 2026-09-24 00:00 |
14:12:21.19 |
-03:40:05.1 |
HIP 69414 |
21.78 |
| 2026-09-24 12:00 |
14:12:45.46 |
-03:43:24.5 |
HIP 69537 |
20.03 |
| 2026-09-25 00:00 |
14:13:09.79 |
-03:46:43.6 |
HIP 69537 |
14.00 |
| 2026-09-25 12:00 |
14:13:34.16 |
-03:50:02.3 |
HIP 69537 |
9.28 |
| 2026-09-26 00:00 |
14:13:58.59 |
-03:53:20.7 |
HIP 69537 |
8.49 |
| 2026-09-26 12:00 |
14:14:23.06 |
-03:56:38.8 |
HIP 69537 |
12.42 |
| 2026-09-27 00:00 |
14:14:47.59 |
-03:59:56.6 |
HIP 69537 |
18.24 |
| 2026-09-27 12:00 |
14:15:12.16 |
-04:03:14.0 |
HIP 69724 |
21.92 |
| 2026-09-28 00:00 |
14:15:36.78 |
-04:06:31.1 |
HIP 69724 |
15.15 |
| 2026-09-28 12:00 |
14:16:01.44 |
-04:09:47.9 |
HIP 69724 |
8.68 |
| 2026-09-29 00:00 |
14:16:26.16 |
-04:13:04.3 |
HIP 69724 |
4.28 |
| 2026-09-29 12:00 |
14:16:50.91 |
-04:16:20.4 |
HIP 69789 |
4.50 |
| 2026-09-30 00:00 |
14:17:15.72 |
-04:19:36.1 |
HIP 69789 |
3.22 |
| 2026-09-30 12:00 |
14:17:40.57 |
-04:22:51.5 |
HIP 69817 |
8.49 |
| 2026-10-01 00:00 |
14:18:05.46 |
-04:26:06.5 |
HIP 69817 |
15.08 |
| 2026-10-01 12:00 |
14:18:30.40 |
-04:29:21.2 |
HIP 69817 |
21.93 |
| 2026-10-02 00:00 |
14:18:55.38 |
-04:32:35.5 |
HIP 70053 |
26.85 |
| 2026-10-02 12:00 |
14:19:20.40 |
-04:35:49.4 |
HIP 70053 |
20.35 |
| 2026-10-03 00:00 |
14:19:45.47 |
-04:39:03.0 |
HIP 70053 |
14.36 |
| 2026-10-03 12:00 |
14:20:10.57 |
-04:42:16.3 |
HIP 70053 |
9.87 |
| 2026-10-04 00:00 |
14:20:35.72 |
-04:45:29.1 |
HIP 70053 |
9.36 |
| 2026-10-04 12:00 |
14:21:00.91 |
-04:48:41.6 |
HIP 70161 |
10.20 |
| 2026-10-05 00:00 |
14:21:26.14 |
-04:51:53.7 |
HIP 70161 |
12.48 |
| 2026-10-05 12:00 |
14:21:51.41 |
-04:55:05.5 |
HIP 70161 |
17.52 |
| 2026-10-06 00:00 |
14:22:16.72 |
-04:58:16.9 |
HIP 70162 |
20.46 |
| 2026-10-06 12:00 |
14:22:42.07 |
-05:01:27.8 |
HIP 70162 |
23.57 |
| 2026-10-07 00:00 |
14:23:07.45 |
-05:04:38.4 |
HIP 70395 |
26.21 |
| 2026-10-07 12:00 |
14:23:32.87 |
-05:07:48.6 |
HIP 70395 |
20.23 |
| 2026-10-08 00:00 |
14:23:58.33 |
-05:10:58.4 |
HIP 70395 |
15.23 |
| 2026-10-08 12:00 |
14:24:23.82 |
-05:14:07.8 |
HIP 70395 |
12.45 |
| 2026-10-09 00:00 |
14:24:49.35 |
-05:17:16.9 |
HIP 70395 |
13.38 |
| 2026-10-09 12:00 |
14:25:14.91 |
-05:20:25.5 |
HIP 70395 |
17.43 |
| 2026-10-10 00:00 |
14:25:40.51 |
-05:23:33.6 |
HIP 70623 |
21.26 |
| 2026-10-10 12:00 |
14:26:06.14 |
-05:26:41.4 |
HIP 70623 |
19.18 |
| 2026-10-11 00:00 |
14:26:31.80 |
-05:29:48.8 |
HIP 70623 |
19.61 |