| Parameter |
Value |
| Designation |
C/1968 U1 (Wild) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1968-03-30T21:16:07.515840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:19Z |
| Obs used |
15 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
1968-10-24.0000000 |
| e |
0.99993577 |
| q (au) |
2.603057 |
| a (au) |
40525.056308 |
| i (deg) |
135.132950 |
| Ω (om, deg) |
209.215253 |
| ω (w, deg) |
101.490599 |
| M (ma, deg) |
0.000025 |
Magnitude
Scatter + Global Linear
$$
M_a = (10.654 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
10.654 |
| n |
6.000 |
| gf |
0.998 |
| gb |
-0.912 |
| k |
0.800 |
| δ90 |
7.619 |
| 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) |
| 2026-06-01 00:00 |
22:29:27.63 |
-58:16:42.0 |
HIP 110887 |
15.95 |
| 2026-06-01 12:00 |
22:29:27.38 |
-58:16:59.0 |
HIP 110887 |
16.10 |
| 2026-06-02 00:00 |
22:29:27.10 |
-58:17:15.9 |
HIP 110887 |
16.25 |
| 2026-06-02 12:00 |
22:29:26.80 |
-58:17:32.9 |
HIP 110887 |
16.41 |
| 2026-06-03 00:00 |
22:29:26.48 |
-58:17:49.9 |
HIP 110887 |
16.57 |
| 2026-06-03 12:00 |
22:29:26.14 |
-58:18:07.0 |
HIP 110887 |
16.73 |
| 2026-06-04 00:00 |
22:29:25.78 |
-58:18:24.1 |
HIP 110887 |
16.89 |
| 2026-06-04 12:00 |
22:29:25.39 |
-58:18:41.2 |
HIP 110887 |
17.05 |
| 2026-06-05 00:00 |
22:29:24.99 |
-58:18:58.3 |
HIP 110887 |
17.22 |
| 2026-06-05 12:00 |
22:29:24.56 |
-58:19:15.5 |
HIP 110887 |
17.38 |
| 2026-06-06 00:00 |
22:29:24.11 |
-58:19:32.7 |
HIP 110887 |
17.55 |
| 2026-06-06 12:00 |
22:29:23.64 |
-58:19:49.9 |
HIP 110887 |
17.72 |
| 2026-06-07 00:00 |
22:29:23.15 |
-58:20:07.1 |
HIP 110887 |
17.89 |
| 2026-06-07 12:00 |
22:29:22.64 |
-58:20:24.4 |
HIP 110887 |
18.07 |
| 2026-06-08 00:00 |
22:29:22.11 |
-58:20:41.6 |
HIP 110887 |
18.24 |
| 2026-06-08 12:00 |
22:29:21.55 |
-58:20:58.9 |
HIP 110887 |
18.42 |
| 2026-06-09 00:00 |
22:29:20.97 |
-58:21:16.2 |
HIP 110887 |
18.60 |
| 2026-06-09 12:00 |
22:29:20.38 |
-58:21:33.5 |
HIP 111201 |
18.65 |
| 2026-06-10 00:00 |
22:29:19.76 |
-58:21:50.9 |
HIP 111201 |
18.70 |
| 2026-06-10 12:00 |
22:29:19.12 |
-58:22:08.2 |
HIP 111201 |
18.76 |
| 2026-06-11 00:00 |
22:29:18.46 |
-58:22:25.6 |
HIP 111201 |
18.83 |
| 2026-06-11 12:00 |
22:29:17.77 |
-58:22:43.0 |
HIP 111201 |
18.90 |
| 2026-06-12 00:00 |
22:29:17.07 |
-58:23:00.4 |
HIP 111201 |
18.98 |
| 2026-06-12 12:00 |
22:29:16.35 |
-58:23:17.8 |
HIP 111201 |
19.07 |
| 2026-06-13 00:00 |
22:29:15.60 |
-58:23:35.2 |
HIP 111201 |
19.17 |
| 2026-06-13 12:00 |
22:29:14.83 |
-58:23:52.6 |
HIP 111201 |
19.27 |
| 2026-06-14 00:00 |
22:29:14.05 |
-58:24:10.0 |
HIP 111201 |
19.38 |
| 2026-06-14 12:00 |
22:29:13.24 |
-58:24:27.4 |
HIP 111201 |
19.50 |
| 2026-06-15 00:00 |
22:29:12.41 |
-58:24:44.8 |
HIP 111201 |
19.62 |
| 2026-06-15 12:00 |
22:29:11.56 |
-58:25:02.2 |
HIP 111201 |
19.75 |
| 2026-06-16 00:00 |
22:29:10.68 |
-58:25:19.6 |
HIP 111201 |
19.89 |
| 2026-06-16 12:00 |
22:29:09.79 |
-58:25:37.0 |
HIP 111201 |
20.03 |
| 2026-06-17 00:00 |
22:29:08.88 |
-58:25:54.4 |
HIP 111201 |
20.18 |
| 2026-06-17 12:00 |
22:29:07.94 |
-58:26:11.8 |
HIP 111201 |
20.34 |
| 2026-06-18 00:00 |
22:29:06.99 |
-58:26:29.2 |
HIP 111201 |
20.50 |
| 2026-06-18 12:00 |
22:29:06.01 |
-58:26:46.6 |
HIP 111201 |
20.67 |
| 2026-06-19 00:00 |
22:29:05.02 |
-58:27:04.0 |
HIP 111201 |
20.84 |
| 2026-06-19 12:00 |
22:29:04.00 |
-58:27:21.4 |
HIP 111201 |
21.02 |
| 2026-06-20 00:00 |
22:29:02.97 |
-58:27:38.7 |
HIP 111201 |
21.21 |
| 2026-06-20 12:00 |
22:29:01.91 |
-58:27:56.1 |
HIP 111201 |
21.40 |
| 2026-06-21 00:00 |
22:29:00.83 |
-58:28:13.4 |
HIP 111201 |
21.60 |
| 2026-06-21 12:00 |
22:28:59.74 |
-58:28:30.7 |
HIP 111201 |
21.80 |
| 2026-06-22 00:00 |
22:28:58.62 |
-58:28:48.0 |
HIP 111201 |
22.01 |