| Parameter |
Value |
| Designation |
214P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2002-03-01T01:06:46.031040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:27:56Z |
| Obs used |
131 |
| NEO |
- |
| M1 |
12.100 |
| K1 |
22.750 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2003-05-31.0000000 |
| e |
0.48955169 |
| q (au) |
1.839837 |
| a (au) |
3.604356 |
| i (deg) |
15.226039 |
| Ω (om, deg) |
348.307428 |
| ω (w, deg) |
190.158967 |
| M (ma, deg) |
65.672462 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.817 + 5.612\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.817 |
| n |
5.612 |
| gf |
0.998 |
| gb |
-0.500 |
| 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) |
| 2026-07-29 00:00 |
00:52:34.92 |
+11:13:20.5 |
HIP 4221 |
19.44 |
| 2026-07-29 12:00 |
00:52:32.83 |
+11:14:09.1 |
HIP 4221 |
20.19 |
| 2026-07-30 00:00 |
00:52:30.55 |
+11:14:56.6 |
HIP 4221 |
20.98 |
| 2026-07-30 12:00 |
00:52:28.10 |
+11:15:43.1 |
HIP 4221 |
21.83 |
| 2026-07-31 00:00 |
00:52:25.47 |
+11:16:28.6 |
HIP 4221 |
22.72 |
| 2026-07-31 12:00 |
00:52:22.65 |
+11:17:13.1 |
HIP 4221 |
23.66 |
| 2026-08-01 00:00 |
00:52:19.65 |
+11:17:56.5 |
HIP 4221 |
24.63 |
| 2026-08-01 12:00 |
00:52:16.47 |
+11:18:38.8 |
HIP 4221 |
25.64 |
| 2026-08-02 00:00 |
00:52:13.11 |
+11:19:20.1 |
HIP 4221 |
26.68 |
| 2026-08-02 12:00 |
00:52:09.56 |
+11:20:00.4 |
HIP 4221 |
27.76 |
| 2026-08-03 00:00 |
00:52:05.83 |
+11:20:39.5 |
HIP 4221 |
28.87 |
| 2026-08-03 12:00 |
00:52:01.92 |
+11:21:17.7 |
HIP 4221 |
30.02 |
| 2026-08-04 00:00 |
00:51:57.82 |
+11:21:54.7 |
HIP 4221 |
31.19 |
| 2026-08-04 12:00 |
00:51:53.54 |
+11:22:30.6 |
HIP 4221 |
32.40 |
| 2026-08-05 00:00 |
00:51:49.08 |
+11:23:05.5 |
HIP 4029 |
32.11 |
| 2026-08-05 12:00 |
00:51:44.43 |
+11:23:39.3 |
HIP 4029 |
31.46 |
| 2026-08-06 00:00 |
00:51:39.59 |
+11:24:12.0 |
HIP 4029 |
30.87 |
| 2026-08-06 12:00 |
00:51:34.58 |
+11:24:43.6 |
HIP 4029 |
30.34 |
| 2026-08-07 00:00 |
00:51:29.37 |
+11:25:14.1 |
HIP 4029 |
29.89 |
| 2026-08-07 12:00 |
00:51:23.98 |
+11:25:43.4 |
HIP 4029 |
29.51 |
| 2026-08-08 00:00 |
00:51:18.41 |
+11:26:11.7 |
HIP 3912 |
28.67 |
| 2026-08-08 12:00 |
00:51:12.65 |
+11:26:38.8 |
HIP 3912 |
27.52 |
| 2026-08-09 00:00 |
00:51:06.71 |
+11:27:04.9 |
HIP 3912 |
26.38 |
| 2026-08-09 12:00 |
00:51:00.58 |
+11:27:29.8 |
HIP 3912 |
25.29 |
| 2026-08-10 00:00 |
00:50:54.27 |
+11:27:53.5 |
HIP 3912 |
24.24 |
| 2026-08-10 12:00 |
00:50:47.77 |
+11:28:16.2 |
HIP 3912 |
23.25 |
| 2026-08-11 00:00 |
00:50:41.08 |
+11:28:37.7 |
HIP 3912 |
22.35 |
| 2026-08-11 12:00 |
00:50:34.22 |
+11:28:58.0 |
HIP 3912 |
21.54 |
| 2026-08-12 00:00 |
00:50:27.17 |
+11:29:17.2 |
HIP 3912 |
20.86 |
| 2026-08-12 12:00 |
00:50:19.93 |
+11:29:35.3 |
HIP 3912 |
20.31 |
| 2026-08-13 00:00 |
00:50:12.51 |
+11:29:52.2 |
HIP 3912 |
19.94 |
| 2026-08-13 12:00 |
00:50:04.91 |
+11:30:08.0 |
HIP 3912 |
19.75 |
| 2026-08-14 00:00 |
00:49:57.13 |
+11:30:22.6 |
HIP 3912 |
19.77 |
| 2026-08-14 12:00 |
00:49:49.17 |
+11:30:36.0 |
HIP 3912 |
20.00 |
| 2026-08-15 00:00 |
00:49:41.02 |
+11:30:48.3 |
HIP 3912 |
20.46 |
| 2026-08-15 12:00 |
00:49:32.69 |
+11:30:59.5 |
HIP 3912 |
21.13 |
| 2026-08-16 00:00 |
00:49:24.19 |
+11:31:09.5 |
HIP 3912 |
22.02 |
| 2026-08-16 12:00 |
00:49:15.50 |
+11:31:18.3 |
HIP 3912 |
23.10 |
| 2026-08-17 00:00 |
00:49:06.64 |
+11:31:25.9 |
HIP 3912 |
24.36 |
| 2026-08-17 12:00 |
00:48:57.59 |
+11:31:32.4 |
HIP 3702 |
22.67 |
| 2026-08-18 00:00 |
00:48:48.37 |
+11:31:37.8 |
HIP 3702 |
20.51 |
| 2026-08-18 12:00 |
00:48:38.97 |
+11:31:41.9 |
HIP 3702 |
18.33 |
| 2026-08-19 00:00 |
00:48:29.40 |
+11:31:45.0 |
HIP 3702 |
16.16 |