| Parameter |
Value |
| Designation |
467P/LINEAR-Grauer |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2009-01-06T17:10:22.854720Z |
| Orbit solution date (soln_date, UTC) |
2025-01-02T20:13:05Z |
| Obs used |
98 |
| NEO |
- |
| M1 |
8.000 |
| K1 |
12.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-04-20T09:25:04.483200Z |
| Discovery magnitude (MPC) |
23.00 G |
| Discovery observatory (MPC) |
I11 · Gemini South Observatory, Cerro Pachon |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2012-10-23.0000000 |
| e |
0.07147570 |
| q (au) |
5.293712 |
| a (au) |
5.701210 |
| i (deg) |
2.531000 |
| Ω (om, deg) |
44.086442 |
| ω (w, deg) |
264.661424 |
| M (ma, deg) |
100.298035 |
Magnitude
Scatter + Global Linear
$$
M_a = (14.650 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
14.650 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.936 |
| 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) |
| 2026-03-26 00:00 |
02:18:31.44 |
+13:47:49.4 |
HIP 10766 |
9.22 |
| 2026-03-26 12:00 |
02:18:53.13 |
+13:49:43.9 |
HIP 10766 |
8.63 |
| 2026-03-27 00:00 |
02:19:14.88 |
+13:51:38.5 |
HIP 10766 |
11.27 |
| 2026-03-27 12:00 |
02:19:36.67 |
+13:53:33.3 |
HIP 10766 |
15.59 |
| 2026-03-28 00:00 |
02:19:58.52 |
+13:55:28.1 |
HIP 10921 |
18.17 |
| 2026-03-28 12:00 |
02:20:20.43 |
+13:57:23.1 |
HIP 10921 |
17.76 |
| 2026-03-29 00:00 |
02:20:42.38 |
+13:59:18.1 |
HIP 10921 |
19.10 |
| 2026-03-29 12:00 |
02:21:04.38 |
+14:01:13.2 |
HIP 10895 |
20.71 |
| 2026-03-30 00:00 |
02:21:26.44 |
+14:03:08.4 |
HIP 10895 |
22.99 |
| 2026-03-30 12:00 |
02:21:48.54 |
+14:05:03.7 |
HIP 10895 |
26.33 |
| 2026-03-31 00:00 |
02:22:10.69 |
+14:06:59.1 |
HIP 10895 |
30.39 |
| 2026-03-31 12:00 |
02:22:32.89 |
+14:08:54.5 |
HIP 10895 |
34.92 |
| 2026-04-01 00:00 |
02:22:55.14 |
+14:10:50.1 |
HIP 10895 |
39.77 |
| 2026-04-01 12:00 |
02:23:17.43 |
+14:12:45.6 |
HIP 11298 |
37.27 |
| 2026-04-02 00:00 |
02:23:39.77 |
+14:14:41.3 |
HIP 11298 |
31.69 |
| 2026-04-02 12:00 |
02:24:02.16 |
+14:16:37.0 |
HIP 11298 |
26.17 |
| 2026-04-03 00:00 |
02:24:24.59 |
+14:18:32.7 |
HIP 11298 |
20.77 |
| 2026-04-03 12:00 |
02:24:47.06 |
+14:20:28.6 |
HIP 11298 |
15.62 |
| 2026-04-04 00:00 |
02:25:09.58 |
+14:22:24.4 |
HIP 11298 |
11.10 |
| 2026-04-04 12:00 |
02:25:32.15 |
+14:24:20.3 |
HIP 11298 |
8.33 |
| 2026-04-05 00:00 |
02:25:54.75 |
+14:26:16.3 |
HIP 11298 |
9.10 |
| 2026-04-05 12:00 |
02:26:17.40 |
+14:28:12.2 |
HIP 11298 |
12.80 |
| 2026-04-06 00:00 |
02:26:40.09 |
+14:30:08.2 |
HIP 11298 |
17.69 |
| 2026-04-06 12:00 |
02:27:02.83 |
+14:32:04.3 |
HIP 11298 |
23.02 |
| 2026-04-07 00:00 |
02:27:25.60 |
+14:34:00.4 |
HIP 11512 |
18.93 |
| 2026-04-07 12:00 |
02:27:48.41 |
+14:35:56.4 |
HIP 11512 |
13.59 |
| 2026-04-08 00:00 |
02:28:11.27 |
+14:37:52.6 |
HIP 11512 |
8.90 |
| 2026-04-08 12:00 |
02:28:34.16 |
+14:39:48.7 |
HIP 11512 |
6.51 |
| 2026-04-09 00:00 |
02:28:57.09 |
+14:41:44.8 |
HIP 11512 |
8.63 |
| 2026-04-09 12:00 |
02:29:20.06 |
+14:43:40.9 |
HIP 11512 |
13.26 |
| 2026-04-10 00:00 |
02:29:43.07 |
+14:45:37.1 |
HIP 11512 |
18.62 |
| 2026-04-10 12:00 |
02:30:06.11 |
+14:47:33.2 |
HIP 11512 |
24.23 |
| 2026-04-11 00:00 |
02:30:29.19 |
+14:49:29.4 |
HIP 11512 |
29.96 |
| 2026-04-11 12:00 |
02:30:52.31 |
+14:51:25.5 |
HIP 11843 |
31.30 |
| 2026-04-12 00:00 |
02:31:15.46 |
+14:53:21.6 |
HIP 11843 |
25.38 |
| 2026-04-12 12:00 |
02:31:38.64 |
+14:55:17.7 |
HIP 11843 |
19.45 |
| 2026-04-13 00:00 |
02:32:01.86 |
+14:57:13.8 |
HIP 11843 |
13.52 |
| 2026-04-13 12:00 |
02:32:25.11 |
+14:59:09.8 |
HIP 11843 |
7.59 |
| 2026-04-14 00:00 |
02:32:48.40 |
+15:01:05.9 |
HIP 11843 |
1.69 |
| 2026-04-14 12:00 |
02:33:11.72 |
+15:03:01.9 |
HIP 11843 |
4.35 |
| 2026-04-15 00:00 |
02:33:35.07 |
+15:04:57.8 |
HIP 11843 |
10.29 |
| 2026-04-15 12:00 |
02:33:58.45 |
+15:06:53.7 |
HIP 11843 |
16.25 |
| 2026-04-16 00:00 |
02:34:21.86 |
+15:08:49.6 |
HIP 12015 |
16.70 |