| Parameter |
Value |
| Designation |
C/2011 J3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-01-24T09:18:41.359680Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:49Z |
| Obs used |
83 |
| NEO |
- |
| M1 |
16.200 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2011-05-30.0000000 |
| e |
0.92583194 |
| q (au) |
1.450992 |
| a (au) |
19.563572 |
| i (deg) |
114.712382 |
| Ω (om, deg) |
21.512284 |
| ω (w, deg) |
27.844964 |
| M (ma, deg) |
1.430748 |
Magnitude
Scatter + Global Linear
$$
M_a = (17.765 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
17.765 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
12:32:57.55 |
-16:41:31.1 |
HIP 61236 |
2.09 |
| 2026-06-01 12:00 |
12:32:55.25 |
-16:41:08.1 |
HIP 61236 |
1.56 |
| 2026-06-02 00:00 |
12:32:52.99 |
-16:40:45.2 |
HIP 61236 |
1.18 |
| 2026-06-02 12:00 |
12:32:50.76 |
-16:40:22.5 |
HIP 61236 |
1.11 |
| 2026-06-03 00:00 |
12:32:48.56 |
-16:40:00.0 |
HIP 61236 |
1.38 |
| 2026-06-03 12:00 |
12:32:46.40 |
-16:39:37.5 |
HIP 61236 |
1.84 |
| 2026-06-04 00:00 |
12:32:44.27 |
-16:39:15.2 |
HIP 61236 |
2.37 |
| 2026-06-04 12:00 |
12:32:42.18 |
-16:38:53.1 |
HIP 61236 |
2.94 |
| 2026-06-05 00:00 |
12:32:40.12 |
-16:38:31.1 |
HIP 61236 |
3.51 |
| 2026-06-05 12:00 |
12:32:38.10 |
-16:38:09.3 |
HIP 61236 |
4.09 |
| 2026-06-06 00:00 |
12:32:36.11 |
-16:37:47.6 |
HIP 61236 |
4.67 |
| 2026-06-06 12:00 |
12:32:34.15 |
-16:37:26.1 |
HIP 61236 |
5.24 |
| 2026-06-07 00:00 |
12:32:32.23 |
-16:37:04.8 |
HIP 61236 |
5.81 |
| 2026-06-07 12:00 |
12:32:30.34 |
-16:36:43.6 |
HIP 61236 |
6.37 |
| 2026-06-08 00:00 |
12:32:28.49 |
-16:36:22.6 |
HIP 61236 |
6.93 |
| 2026-06-08 12:00 |
12:32:26.67 |
-16:36:01.7 |
HIP 61236 |
7.48 |
| 2026-06-09 00:00 |
12:32:24.89 |
-16:35:41.1 |
HIP 61236 |
8.02 |
| 2026-06-09 12:00 |
12:32:23.14 |
-16:35:20.5 |
HIP 61236 |
8.55 |
| 2026-06-10 00:00 |
12:32:21.43 |
-16:35:00.2 |
HIP 61236 |
9.07 |
| 2026-06-10 12:00 |
12:32:19.75 |
-16:34:40.0 |
HIP 61236 |
9.59 |
| 2026-06-11 00:00 |
12:32:18.11 |
-16:34:20.0 |
HIP 61236 |
10.10 |
| 2026-06-11 12:00 |
12:32:16.50 |
-16:34:00.2 |
HIP 61236 |
10.60 |
| 2026-06-12 00:00 |
12:32:14.93 |
-16:33:40.5 |
HIP 61236 |
11.09 |
| 2026-06-12 12:00 |
12:32:13.40 |
-16:33:21.1 |
HIP 61236 |
11.58 |
| 2026-06-13 00:00 |
12:32:11.90 |
-16:33:01.8 |
HIP 61236 |
12.06 |
| 2026-06-13 12:00 |
12:32:10.44 |
-16:32:42.7 |
HIP 61236 |
12.52 |
| 2026-06-14 00:00 |
12:32:09.01 |
-16:32:23.8 |
HIP 61236 |
12.98 |
| 2026-06-14 12:00 |
12:32:07.62 |
-16:32:05.0 |
HIP 61236 |
13.43 |
| 2026-06-15 00:00 |
12:32:06.26 |
-16:31:46.5 |
HIP 61236 |
13.88 |
| 2026-06-15 12:00 |
12:32:04.94 |
-16:31:28.1 |
HIP 61236 |
14.31 |
| 2026-06-16 00:00 |
12:32:03.65 |
-16:31:09.9 |
HIP 61236 |
14.74 |
| 2026-06-16 12:00 |
12:32:02.41 |
-16:30:52.0 |
HIP 61236 |
15.15 |
| 2026-06-17 00:00 |
12:32:01.19 |
-16:30:34.2 |
HIP 61236 |
15.56 |
| 2026-06-17 12:00 |
12:32:00.02 |
-16:30:16.6 |
HIP 61236 |
15.96 |
| 2026-06-18 00:00 |
12:31:58.88 |
-16:29:59.2 |
HIP 61236 |
16.35 |
| 2026-06-18 12:00 |
12:31:57.78 |
-16:29:42.0 |
HIP 61236 |
16.74 |
| 2026-06-19 00:00 |
12:31:56.71 |
-16:29:25.0 |
HIP 61236 |
17.11 |
| 2026-06-19 12:00 |
12:31:55.68 |
-16:29:08.2 |
HIP 61236 |
17.48 |
| 2026-06-20 00:00 |
12:31:54.68 |
-16:28:51.6 |
HIP 61174 |
17.27 |
| 2026-06-20 12:00 |
12:31:53.72 |
-16:28:35.2 |
HIP 61174 |
17.03 |
| 2026-06-21 00:00 |
12:31:52.80 |
-16:28:19.0 |
HIP 61174 |
16.80 |
| 2026-06-21 12:00 |
12:31:51.91 |
-16:28:03.0 |
HIP 61174 |
16.58 |
| 2026-06-22 00:00 |
12:31:51.06 |
-16:27:47.2 |
HIP 61174 |
16.36 |