| Parameter |
Value |
| Designation |
148P/Anderson-LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-06-13T16:15:58.455360Z |
| Orbit solution date (soln_date, UTC) |
2024-05-15T12:05:54Z |
| Obs used |
250 |
| NEO |
- |
| M1 |
13.000 |
| K1 |
14.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2012-11-05.0000000 |
| e |
0.53932159 |
| q (au) |
1.694251 |
| a (au) |
3.677730 |
| i (deg) |
3.682208 |
| Ω (om, deg) |
89.790123 |
| ω (w, deg) |
6.596200 |
| M (ma, deg) |
227.148123 |
Magnitude
Scatter + Global Linear
$$
M_a = (11.853 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.853 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.923 |
| k |
1.000 |
| 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) |
| 2026-09-20 00:00 |
18:53:50.94 |
-24:25:41.9 |
HIP 92780 |
21.68 |
| 2026-09-20 12:00 |
18:53:51.61 |
-24:25:38.4 |
HIP 92780 |
21.69 |
| 2026-09-21 00:00 |
18:53:52.48 |
-24:25:34.6 |
HIP 92780 |
21.68 |
| 2026-09-21 12:00 |
18:53:53.56 |
-24:25:30.6 |
HIP 92780 |
21.67 |
| 2026-09-22 00:00 |
18:53:54.85 |
-24:25:26.3 |
HIP 92780 |
21.65 |
| 2026-09-22 12:00 |
18:53:56.34 |
-24:25:21.7 |
HIP 92780 |
21.63 |
| 2026-09-23 00:00 |
18:53:58.04 |
-24:25:16.8 |
HIP 92780 |
21.60 |
| 2026-09-23 12:00 |
18:53:59.95 |
-24:25:11.7 |
HIP 92780 |
21.58 |
| 2026-09-24 00:00 |
18:54:02.06 |
-24:25:06.2 |
HIP 92780 |
21.56 |
| 2026-09-24 12:00 |
18:54:04.37 |
-24:25:00.6 |
HIP 92780 |
21.54 |
| 2026-09-25 00:00 |
18:54:06.89 |
-24:24:54.6 |
HIP 92780 |
21.53 |
| 2026-09-25 12:00 |
18:54:09.61 |
-24:24:48.4 |
HIP 92780 |
21.54 |
| 2026-09-26 00:00 |
18:54:12.54 |
-24:24:41.9 |
HIP 92780 |
21.57 |
| 2026-09-26 12:00 |
18:54:15.67 |
-24:24:35.1 |
HIP 92780 |
21.61 |
| 2026-09-27 00:00 |
18:54:19.00 |
-24:24:28.1 |
HIP 92780 |
21.69 |
| 2026-09-27 12:00 |
18:54:22.53 |
-24:24:20.8 |
HIP 92780 |
21.79 |
| 2026-09-28 00:00 |
18:54:26.26 |
-24:24:13.2 |
HIP 92780 |
21.93 |
| 2026-09-28 12:00 |
18:54:30.19 |
-24:24:05.4 |
HIP 92780 |
22.11 |
| 2026-09-29 00:00 |
18:54:34.32 |
-24:23:57.3 |
HIP 92780 |
22.34 |
| 2026-09-29 12:00 |
18:54:38.65 |
-24:23:48.9 |
HIP 92780 |
22.61 |
| 2026-09-30 00:00 |
18:54:43.17 |
-24:23:40.3 |
HIP 92780 |
22.94 |
| 2026-09-30 12:00 |
18:54:47.90 |
-24:23:31.4 |
HIP 92780 |
23.32 |
| 2026-10-01 00:00 |
18:54:52.82 |
-24:23:22.3 |
HIP 92780 |
23.77 |
| 2026-10-01 12:00 |
18:54:57.94 |
-24:23:12.9 |
HIP 92780 |
24.28 |
| 2026-10-02 00:00 |
18:55:03.25 |
-24:23:03.2 |
HIP 92780 |
24.85 |
| 2026-10-02 12:00 |
18:55:08.76 |
-24:22:53.3 |
HIP 92780 |
25.49 |
| 2026-10-03 00:00 |
18:55:14.47 |
-24:22:43.1 |
HIP 92994 |
24.85 |
| 2026-10-03 12:00 |
18:55:20.37 |
-24:22:32.6 |
HIP 92994 |
23.89 |
| 2026-10-04 00:00 |
18:55:26.47 |
-24:22:21.9 |
HIP 92994 |
22.92 |
| 2026-10-04 12:00 |
18:55:32.75 |
-24:22:10.9 |
HIP 92994 |
21.98 |
| 2026-10-05 00:00 |
18:55:39.24 |
-24:21:59.6 |
HIP 92994 |
21.07 |
| 2026-10-05 12:00 |
18:55:45.91 |
-24:21:48.1 |
HIP 92994 |
20.20 |
| 2026-10-06 00:00 |
18:55:52.78 |
-24:21:36.3 |
HIP 92994 |
19.38 |
| 2026-10-06 12:00 |
18:55:59.83 |
-24:21:24.3 |
HIP 92994 |
18.65 |
| 2026-10-07 00:00 |
18:56:07.08 |
-24:21:11.9 |
HIP 92994 |
18.02 |
| 2026-10-07 12:00 |
18:56:14.52 |
-24:20:59.4 |
HIP 92994 |
17.51 |
| 2026-10-08 00:00 |
18:56:22.14 |
-24:20:46.5 |
HIP 92994 |
17.14 |
| 2026-10-08 12:00 |
18:56:29.96 |
-24:20:33.4 |
HIP 92994 |
16.95 |
| 2026-10-09 00:00 |
18:56:37.96 |
-24:20:20.0 |
HIP 92994 |
16.95 |
| 2026-10-09 12:00 |
18:56:46.15 |
-24:20:06.4 |
HIP 92994 |
17.15 |
| 2026-10-10 00:00 |
18:56:54.53 |
-24:19:52.4 |
HIP 92994 |
17.56 |
| 2026-10-10 12:00 |
18:57:03.09 |
-24:19:38.3 |
HIP 92994 |
18.18 |
| 2026-10-11 00:00 |
18:57:11.84 |
-24:19:23.8 |
HIP 92994 |
19.00 |