| Parameter |
Value |
| Designation |
216P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-05-30T22:32:33.506880Z |
| Orbit solution date (soln_date, UTC) |
2024-07-07T00:42:15Z |
| Obs used |
403 |
| NEO |
- |
| M1 |
10.700 |
| K1 |
21.750 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2017-04-30.0000000 |
| e |
0.44545351 |
| q (au) |
2.148896 |
| a (au) |
3.875051 |
| i (deg) |
9.046729 |
| Ω (om, deg) |
359.865529 |
| ω (w, deg) |
151.513702 |
| M (ma, deg) |
43.163177 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.693 + 5.566\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.693 |
| n |
5.566 |
| gf |
1.000 |
| gb |
-0.943 |
| 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) |
| 2026-06-01 00:00 |
21:08:26.49 |
-25:30:29.7 |
HIP 104482 |
21.03 |
| 2026-06-01 12:00 |
21:08:23.27 |
-25:31:20.9 |
HIP 104222 |
20.35 |
| 2026-06-02 00:00 |
21:08:19.84 |
-25:32:12.9 |
HIP 104222 |
19.49 |
| 2026-06-02 12:00 |
21:08:16.18 |
-25:33:05.6 |
HIP 104222 |
18.62 |
| 2026-06-03 00:00 |
21:08:12.31 |
-25:33:59.0 |
HIP 104222 |
17.73 |
| 2026-06-03 12:00 |
21:08:08.23 |
-25:34:53.2 |
HIP 104222 |
16.85 |
| 2026-06-04 00:00 |
21:08:03.92 |
-25:35:48.1 |
HIP 104222 |
15.97 |
| 2026-06-04 12:00 |
21:07:59.40 |
-25:36:43.7 |
HIP 104222 |
15.11 |
| 2026-06-05 00:00 |
21:07:54.66 |
-25:37:40.0 |
HIP 104222 |
14.30 |
| 2026-06-05 12:00 |
21:07:49.70 |
-25:38:37.0 |
HIP 104222 |
13.54 |
| 2026-06-06 00:00 |
21:07:44.53 |
-25:39:34.8 |
HIP 104222 |
12.86 |
| 2026-06-06 12:00 |
21:07:39.14 |
-25:40:33.2 |
HIP 104222 |
12.30 |
| 2026-06-07 00:00 |
21:07:33.53 |
-25:41:32.2 |
HIP 104222 |
11.89 |
| 2026-06-07 12:00 |
21:07:27.71 |
-25:42:32.0 |
HIP 104222 |
11.66 |
| 2026-06-08 00:00 |
21:07:21.67 |
-25:43:32.4 |
HIP 104222 |
11.65 |
| 2026-06-08 12:00 |
21:07:15.41 |
-25:44:33.5 |
HIP 104222 |
11.87 |
| 2026-06-09 00:00 |
21:07:08.94 |
-25:45:35.2 |
HIP 104222 |
12.33 |
| 2026-06-09 12:00 |
21:07:02.25 |
-25:46:37.5 |
HIP 104222 |
13.02 |
| 2026-06-10 00:00 |
21:06:55.34 |
-25:47:40.5 |
HIP 104222 |
13.93 |
| 2026-06-10 12:00 |
21:06:48.22 |
-25:48:44.1 |
HIP 104222 |
15.04 |
| 2026-06-11 00:00 |
21:06:40.88 |
-25:49:48.3 |
HIP 104222 |
16.32 |
| 2026-06-11 12:00 |
21:06:33.33 |
-25:50:53.1 |
HIP 104222 |
17.74 |
| 2026-06-12 00:00 |
21:06:25.57 |
-25:51:58.5 |
HIP 104222 |
19.30 |
| 2026-06-12 12:00 |
21:06:17.59 |
-25:53:04.5 |
HIP 104222 |
20.97 |
| 2026-06-13 00:00 |
21:06:09.40 |
-25:54:11.1 |
HIP 104068 |
21.67 |
| 2026-06-13 12:00 |
21:06:01.00 |
-25:55:18.2 |
HIP 104068 |
19.56 |
| 2026-06-14 00:00 |
21:05:52.38 |
-25:56:25.8 |
HIP 104068 |
17.43 |
| 2026-06-14 12:00 |
21:05:43.55 |
-25:57:34.0 |
HIP 104068 |
15.31 |
| 2026-06-15 00:00 |
21:05:34.52 |
-25:58:42.7 |
HIP 104068 |
13.20 |
| 2026-06-15 12:00 |
21:05:25.27 |
-25:59:51.9 |
HIP 104068 |
11.15 |
| 2026-06-16 00:00 |
21:05:15.82 |
-26:01:01.7 |
HIP 104068 |
9.23 |
| 2026-06-16 12:00 |
21:05:06.16 |
-26:02:11.9 |
HIP 104068 |
7.60 |
| 2026-06-17 00:00 |
21:04:56.29 |
-26:03:22.5 |
HIP 104068 |
6.51 |
| 2026-06-17 12:00 |
21:04:46.22 |
-26:04:33.6 |
HIP 104068 |
6.32 |
| 2026-06-18 00:00 |
21:04:35.94 |
-26:05:45.2 |
HIP 104068 |
7.14 |
| 2026-06-18 12:00 |
21:04:25.46 |
-26:06:57.2 |
HIP 104068 |
8.72 |
| 2026-06-19 00:00 |
21:04:14.78 |
-26:08:09.6 |
HIP 104068 |
10.78 |
| 2026-06-19 12:00 |
21:04:03.90 |
-26:09:22.5 |
HIP 104068 |
13.11 |
| 2026-06-20 00:00 |
21:03:52.82 |
-26:10:35.7 |
HIP 104068 |
15.61 |
| 2026-06-20 12:00 |
21:03:41.54 |
-26:11:49.2 |
HIP 104068 |
18.23 |
| 2026-06-21 00:00 |
21:03:30.07 |
-26:13:03.2 |
HIP 104068 |
20.95 |
| 2026-06-21 12:00 |
21:03:18.39 |
-26:14:17.5 |
HIP 104068 |
23.74 |
| 2026-06-22 00:00 |
21:03:06.53 |
-26:15:32.1 |
HIP 104068 |
26.60 |