| Parameter |
Value |
| Designation |
294P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-03-02T22:57:19.949760Z |
| Orbit solution date (soln_date, UTC) |
2025-04-24T09:42:31Z |
| Obs used |
269 |
| NEO |
Yes |
| M1 |
17.900 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2012-07-03.0000000 |
| e |
0.59553149 |
| q (au) |
1.294963 |
| a (au) |
3.201640 |
| i (deg) |
18.216347 |
| Ω (om, deg) |
312.897989 |
| ω (w, deg) |
235.321908 |
| M (ma, deg) |
255.403331 |
Magnitude
Scatter + Global Linear
$$
M_a = (16.285 + 2.939\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
16.285 |
| n |
2.939 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.999 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
21:59:06.12 |
-13:12:02.5 |
HIP 108477 |
9.37 |
| 2026-05-12 12:00 |
21:59:21.46 |
-13:09:08.7 |
HIP 108477 |
13.93 |
| 2026-05-13 00:00 |
21:59:36.51 |
-13:06:16.1 |
HIP 108477 |
18.51 |
| 2026-05-13 12:00 |
21:59:51.27 |
-13:03:24.7 |
HIP 108628 |
14.67 |
| 2026-05-14 00:00 |
22:00:05.75 |
-13:00:34.5 |
HIP 108628 |
10.45 |
| 2026-05-14 12:00 |
22:00:19.93 |
-12:57:45.6 |
HIP 108628 |
6.66 |
| 2026-05-15 00:00 |
22:00:33.82 |
-12:54:57.8 |
HIP 108628 |
4.38 |
| 2026-05-15 12:00 |
22:00:47.43 |
-12:52:11.3 |
HIP 108628 |
5.64 |
| 2026-05-16 00:00 |
22:01:00.73 |
-12:49:26.0 |
HIP 108628 |
8.97 |
| 2026-05-16 12:00 |
22:01:13.75 |
-12:46:42.0 |
HIP 108628 |
12.79 |
| 2026-05-17 00:00 |
22:01:26.47 |
-12:43:59.2 |
HIP 108628 |
16.71 |
| 2026-05-17 12:00 |
22:01:38.89 |
-12:41:17.7 |
HIP 108628 |
20.63 |
| 2026-05-18 00:00 |
22:01:51.01 |
-12:38:37.4 |
HIP 108628 |
24.53 |
| 2026-05-18 12:00 |
22:02:02.83 |
-12:35:58.4 |
HIP 108821 |
25.27 |
| 2026-05-19 00:00 |
22:02:14.35 |
-12:33:20.7 |
HIP 108821 |
21.76 |
| 2026-05-19 12:00 |
22:02:25.58 |
-12:30:44.3 |
HIP 108821 |
18.42 |
| 2026-05-20 00:00 |
22:02:36.50 |
-12:28:09.2 |
HIP 108821 |
15.32 |
| 2026-05-20 12:00 |
22:02:47.11 |
-12:25:35.4 |
HIP 108821 |
12.58 |
| 2026-05-21 00:00 |
22:02:57.43 |
-12:23:02.9 |
HIP 108821 |
10.41 |
| 2026-05-21 12:00 |
22:03:07.43 |
-12:20:31.7 |
HIP 108821 |
9.15 |
| 2026-05-22 00:00 |
22:03:17.14 |
-12:18:01.8 |
HIP 108821 |
9.10 |
| 2026-05-22 12:00 |
22:03:26.53 |
-12:15:33.3 |
HIP 108821 |
10.21 |
| 2026-05-23 00:00 |
22:03:35.62 |
-12:13:06.1 |
HIP 108821 |
12.11 |
| 2026-05-23 12:00 |
22:03:44.40 |
-12:10:40.2 |
HIP 108821 |
14.44 |
| 2026-05-24 00:00 |
22:03:52.87 |
-12:08:15.7 |
HIP 108821 |
17.00 |
| 2026-05-24 12:00 |
22:04:01.04 |
-12:05:52.5 |
HIP 108821 |
19.66 |
| 2026-05-25 00:00 |
22:04:08.89 |
-12:03:30.7 |
HIP 108821 |
22.36 |
| 2026-05-25 12:00 |
22:04:16.43 |
-12:01:10.2 |
HIP 109084 |
24.09 |
| 2026-05-26 00:00 |
22:04:23.66 |
-11:58:51.1 |
HIP 109084 |
21.85 |
| 2026-05-26 12:00 |
22:04:30.57 |
-11:56:33.4 |
HIP 109084 |
19.86 |
| 2026-05-27 00:00 |
22:04:37.17 |
-11:54:17.0 |
HIP 109084 |
18.18 |
| 2026-05-27 12:00 |
22:04:43.46 |
-11:52:02.0 |
HIP 109084 |
16.87 |
| 2026-05-28 00:00 |
22:04:49.42 |
-11:49:48.4 |
HIP 109084 |
15.98 |
| 2026-05-28 12:00 |
22:04:55.08 |
-11:47:36.2 |
HIP 109084 |
15.57 |
| 2026-05-29 00:00 |
22:05:00.41 |
-11:45:25.4 |
HIP 109084 |
15.63 |
| 2026-05-29 12:00 |
22:05:05.43 |
-11:43:16.0 |
HIP 109084 |
16.14 |
| 2026-05-30 00:00 |
22:05:10.12 |
-11:41:08.0 |
HIP 109084 |
17.02 |
| 2026-05-30 12:00 |
22:05:14.50 |
-11:39:01.5 |
HIP 109084 |
18.21 |
| 2026-05-31 00:00 |
22:05:18.55 |
-11:36:56.3 |
HIP 109084 |
19.62 |
| 2026-05-31 12:00 |
22:05:22.29 |
-11:34:52.6 |
HIP 109084 |
21.19 |
| 2026-06-01 00:00 |
22:05:25.70 |
-11:32:50.3 |
HIP 109084 |
22.87 |
| 2026-06-01 12:00 |
22:05:28.78 |
-11:30:49.5 |
HIP 109084 |
24.63 |
| 2026-06-02 00:00 |
22:05:31.54 |
-11:28:50.1 |
HIP 109084 |
26.44 |