| Parameter |
Value |
| Designation |
C/2014 G1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-11-06T16:43:34.233600Z |
| Orbit solution date (soln_date, UTC) |
2022-06-20T23:12:31Z |
| Obs used |
89 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
12.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2014-03-11.0000000 |
| e |
0.99470139 |
| q (au) |
5.468636 |
| a (au) |
1032.088644 |
| i (deg) |
165.640250 |
| Ω (om, deg) |
337.927549 |
| ω (w, deg) |
77.054859 |
| M (ma, deg) |
0.003695 |
Magnitude
Scatter + Global Linear
$$
M_a = (4.272 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
4.272 |
| n |
6.000 |
| gf |
1.000 |
| 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) |
| 2026-06-01 00:00 |
08:58:26.56 |
+11:30:02.4 |
HIP 44066 |
21.44 |
| 2026-06-01 12:00 |
08:58:28.03 |
+11:30:00.0 |
HIP 44066 |
21.47 |
| 2026-06-02 00:00 |
08:58:29.54 |
+11:29:57.2 |
HIP 44066 |
21.51 |
| 2026-06-02 12:00 |
08:58:31.08 |
+11:29:54.4 |
HIP 44066 |
21.57 |
| 2026-06-03 00:00 |
08:58:32.65 |
+11:29:51.4 |
HIP 44066 |
21.63 |
| 2026-06-03 12:00 |
08:58:34.25 |
+11:29:48.2 |
HIP 44066 |
21.70 |
| 2026-06-04 00:00 |
08:58:35.88 |
+11:29:44.9 |
HIP 44066 |
21.78 |
| 2026-06-04 12:00 |
08:58:37.54 |
+11:29:41.4 |
HIP 44066 |
21.87 |
| 2026-06-05 00:00 |
08:58:39.23 |
+11:29:37.7 |
HIP 44066 |
21.98 |
| 2026-06-05 12:00 |
08:58:40.95 |
+11:29:33.9 |
HIP 44066 |
22.09 |
| 2026-06-06 00:00 |
08:58:42.70 |
+11:29:30.0 |
HIP 44066 |
22.21 |
| 2026-06-06 12:00 |
08:58:44.48 |
+11:29:25.8 |
HIP 44066 |
22.35 |
| 2026-06-07 00:00 |
08:58:46.29 |
+11:29:21.6 |
HIP 44066 |
22.50 |
| 2026-06-07 12:00 |
08:58:48.12 |
+11:29:17.1 |
HIP 44066 |
22.66 |
| 2026-06-08 00:00 |
08:58:49.99 |
+11:29:12.5 |
HIP 44066 |
22.83 |
| 2026-06-08 12:00 |
08:58:51.89 |
+11:29:07.8 |
HIP 44066 |
23.02 |
| 2026-06-09 00:00 |
08:58:53.81 |
+11:29:02.8 |
HIP 44066 |
23.21 |
| 2026-06-09 12:00 |
08:58:55.77 |
+11:28:57.8 |
HIP 44066 |
23.42 |
| 2026-06-10 00:00 |
08:58:57.75 |
+11:28:52.5 |
HIP 44066 |
23.65 |
| 2026-06-10 12:00 |
08:58:59.76 |
+11:28:47.2 |
HIP 44066 |
23.88 |
| 2026-06-11 00:00 |
08:59:01.80 |
+11:28:41.6 |
HIP 44066 |
24.13 |
| 2026-06-11 12:00 |
08:59:03.86 |
+11:28:35.9 |
HIP 44066 |
24.39 |
| 2026-06-12 00:00 |
08:59:05.95 |
+11:28:30.1 |
HIP 44066 |
24.67 |
| 2026-06-12 12:00 |
08:59:08.07 |
+11:28:24.1 |
HIP 44066 |
24.95 |
| 2026-06-13 00:00 |
08:59:10.22 |
+11:28:17.9 |
HIP 44066 |
25.25 |
| 2026-06-13 12:00 |
08:59:12.40 |
+11:28:11.6 |
HIP 44066 |
25.56 |
| 2026-06-14 00:00 |
08:59:14.60 |
+11:28:05.1 |
HIP 44066 |
25.89 |
| 2026-06-14 12:00 |
08:59:16.83 |
+11:27:58.5 |
HIP 44066 |
26.23 |
| 2026-06-15 00:00 |
08:59:19.08 |
+11:27:51.8 |
HIP 44066 |
26.58 |
| 2026-06-15 12:00 |
08:59:21.36 |
+11:27:44.8 |
HIP 44066 |
26.94 |
| 2026-06-16 00:00 |
08:59:23.67 |
+11:27:37.8 |
HIP 44066 |
27.31 |
| 2026-06-16 12:00 |
08:59:26.00 |
+11:27:30.6 |
HIP 44066 |
27.70 |
| 2026-06-17 00:00 |
08:59:28.36 |
+11:27:23.2 |
HIP 44066 |
28.10 |
| 2026-06-17 12:00 |
08:59:30.74 |
+11:27:15.7 |
HIP 44066 |
28.51 |
| 2026-06-18 00:00 |
08:59:33.14 |
+11:27:08.0 |
HIP 44160 |
28.81 |
| 2026-06-18 12:00 |
08:59:35.58 |
+11:27:00.2 |
HIP 44160 |
28.92 |
| 2026-06-19 00:00 |
08:59:38.03 |
+11:26:52.3 |
HIP 44160 |
29.04 |
| 2026-06-19 12:00 |
08:59:40.51 |
+11:26:44.2 |
HIP 44160 |
29.18 |
| 2026-06-20 00:00 |
08:59:43.01 |
+11:26:35.9 |
HIP 44160 |
29.33 |
| 2026-06-20 12:00 |
08:59:45.54 |
+11:26:27.5 |
HIP 44160 |
29.50 |
| 2026-06-21 00:00 |
08:59:48.09 |
+11:26:19.0 |
HIP 44160 |
29.69 |
| 2026-06-21 12:00 |
08:59:50.67 |
+11:26:10.4 |
HIP 44160 |
29.89 |
| 2026-06-22 00:00 |
08:59:53.26 |
+11:26:01.5 |
HIP 44160 |
30.10 |