| Parameter |
Value |
| Designation |
194P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2008-02-26T01:27:24.048000Z |
| Orbit solution date (soln_date, UTC) |
2024-05-07T15:48:58Z |
| Obs used |
152 |
| NEO |
- |
| M1 |
17.800 |
| K1 |
7.000 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2011-10-05.0000000 |
| e |
0.57432797 |
| q (au) |
1.705149 |
| a (au) |
4.005781 |
| i (deg) |
11.120766 |
| Ω (om, deg) |
352.049138 |
| ω (w, deg) |
130.540130 |
| M (ma, deg) |
161.897093 |
Magnitude
Scatter + Global Linear
$$
M_a = (18.208 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
18.208 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.999 |
| 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) |
| 2026-06-01 00:00 |
18:10:41.73 |
-37:31:07.2 |
HIP 89001 |
18.81 |
| 2026-06-01 12:00 |
18:10:21.52 |
-37:31:38.7 |
HIP 89001 |
16.69 |
| 2026-06-02 00:00 |
18:10:01.18 |
-37:32:09.3 |
HIP 88919 |
14.11 |
| 2026-06-02 12:00 |
18:09:40.73 |
-37:32:39.0 |
HIP 88919 |
10.62 |
| 2026-06-03 00:00 |
18:09:20.17 |
-37:33:07.8 |
HIP 88919 |
7.73 |
| 2026-06-03 12:00 |
18:08:59.50 |
-37:33:35.7 |
HIP 88919 |
6.37 |
| 2026-06-04 00:00 |
18:08:38.72 |
-37:34:02.6 |
HIP 88919 |
7.47 |
| 2026-06-04 12:00 |
18:08:17.84 |
-37:34:28.6 |
HIP 88919 |
10.28 |
| 2026-06-05 00:00 |
18:07:56.86 |
-37:34:53.6 |
HIP 88919 |
13.81 |
| 2026-06-05 12:00 |
18:07:35.79 |
-37:35:17.6 |
HIP 88680 |
17.34 |
| 2026-06-06 00:00 |
18:07:14.62 |
-37:35:40.7 |
HIP 88680 |
13.57 |
| 2026-06-06 12:00 |
18:06:53.35 |
-37:36:02.8 |
HIP 88680 |
10.13 |
| 2026-06-07 00:00 |
18:06:32.00 |
-37:36:24.0 |
HIP 88680 |
7.52 |
| 2026-06-07 12:00 |
18:06:10.57 |
-37:36:44.1 |
HIP 88680 |
6.81 |
| 2026-06-08 00:00 |
18:05:49.05 |
-37:37:03.3 |
HIP 88680 |
8.51 |
| 2026-06-08 12:00 |
18:05:27.46 |
-37:37:21.4 |
HIP 88614 |
9.12 |
| 2026-06-09 00:00 |
18:05:05.79 |
-37:37:38.6 |
HIP 88614 |
10.78 |
| 2026-06-09 12:00 |
18:04:44.06 |
-37:37:54.7 |
HIP 88614 |
13.64 |
| 2026-06-10 00:00 |
18:04:22.25 |
-37:38:09.8 |
HIP 88614 |
17.13 |
| 2026-06-10 12:00 |
18:04:00.38 |
-37:38:23.9 |
HIP 88614 |
20.94 |
| 2026-06-11 00:00 |
18:03:38.45 |
-37:38:37.0 |
HIP 88614 |
24.92 |
| 2026-06-11 12:00 |
18:03:16.46 |
-37:38:49.0 |
HIP 88614 |
29.02 |
| 2026-06-12 00:00 |
18:02:54.42 |
-37:39:00.0 |
HIP 88210 |
26.61 |
| 2026-06-12 12:00 |
18:02:32.33 |
-37:39:10.0 |
HIP 88210 |
22.61 |
| 2026-06-13 00:00 |
18:02:10.19 |
-37:39:18.9 |
HIP 88210 |
18.78 |
| 2026-06-13 12:00 |
18:01:48.01 |
-37:39:26.8 |
HIP 88210 |
15.23 |
| 2026-06-14 00:00 |
18:01:25.79 |
-37:39:33.6 |
HIP 88210 |
12.22 |
| 2026-06-14 12:00 |
18:01:03.53 |
-37:39:39.4 |
HIP 88210 |
10.26 |
| 2026-06-15 00:00 |
18:00:41.25 |
-37:39:44.1 |
HIP 88210 |
9.98 |
| 2026-06-15 12:00 |
18:00:18.94 |
-37:39:47.7 |
HIP 88210 |
11.52 |
| 2026-06-16 00:00 |
17:59:56.60 |
-37:39:50.3 |
HIP 88210 |
14.31 |
| 2026-06-16 12:00 |
17:59:34.24 |
-37:39:51.9 |
HIP 88081 |
13.30 |
| 2026-06-17 00:00 |
17:59:11.87 |
-37:39:52.4 |
HIP 88081 |
13.11 |
| 2026-06-17 12:00 |
17:58:49.48 |
-37:39:51.8 |
HIP 88081 |
14.37 |
| 2026-06-18 00:00 |
17:58:27.09 |
-37:39:50.2 |
HIP 88081 |
16.75 |
| 2026-06-18 12:00 |
17:58:04.69 |
-37:39:47.5 |
HIP 87973 |
19.58 |
| 2026-06-19 00:00 |
17:57:42.29 |
-37:39:43.7 |
HIP 87973 |
20.28 |
| 2026-06-19 12:00 |
17:57:19.90 |
-37:39:38.9 |
HIP 87973 |
21.87 |
| 2026-06-20 00:00 |
17:56:57.51 |
-37:39:33.0 |
HIP 87973 |
24.17 |
| 2026-06-20 12:00 |
17:56:35.13 |
-37:39:26.1 |
HIP 87973 |
26.99 |
| 2026-06-21 00:00 |
17:56:12.76 |
-37:39:18.1 |
HIP 87672 |
24.25 |
| 2026-06-21 12:00 |
17:55:50.41 |
-37:39:09.1 |
HIP 87672 |
20.47 |
| 2026-06-22 00:00 |
17:55:28.08 |
-37:38:59.0 |
HIP 87672 |
16.99 |