| Parameter |
Value |
| Designation |
C/1954 M2 (Kresak-Peltier) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1954-08-29T16:00:13.749120Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:12Z |
| Obs used |
10 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
1954-08-03.0000000 |
| e |
1.00022617 |
| q (au) |
0.746369 |
| a (au) |
-3300.044138 |
| i (deg) |
88.539550 |
| Ω (om, deg) |
75.566452 |
| ω (w, deg) |
254.728144 |
| M (ma, deg) |
-0.000139 |
Magnitude
Scatter + Global Linear
$$
M_a = (7.972 + 3.248\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
7.972 |
| n |
3.248 |
| 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 |
01:31:45.91 |
+84:32:06.9 |
HIP 7592 |
9.21 |
| 2026-06-01 12:00 |
01:31:54.07 |
+84:32:20.6 |
HIP 7592 |
9.11 |
| 2026-06-02 00:00 |
01:32:02.18 |
+84:32:34.4 |
HIP 7592 |
9.02 |
| 2026-06-02 12:00 |
01:32:10.22 |
+84:32:48.3 |
HIP 7592 |
8.94 |
| 2026-06-03 00:00 |
01:32:18.21 |
+84:33:02.3 |
HIP 7592 |
8.87 |
| 2026-06-03 12:00 |
01:32:26.13 |
+84:33:16.4 |
HIP 7592 |
8.82 |
| 2026-06-04 00:00 |
01:32:33.99 |
+84:33:30.5 |
HIP 7592 |
8.77 |
| 2026-06-04 12:00 |
01:32:41.78 |
+84:33:44.8 |
HIP 7592 |
8.74 |
| 2026-06-05 00:00 |
01:32:49.52 |
+84:33:59.1 |
HIP 7592 |
8.73 |
| 2026-06-05 12:00 |
01:32:57.18 |
+84:34:13.5 |
HIP 7592 |
8.72 |
| 2026-06-06 00:00 |
01:33:04.79 |
+84:34:28.0 |
HIP 7592 |
8.73 |
| 2026-06-06 12:00 |
01:33:12.33 |
+84:34:42.5 |
HIP 7592 |
8.75 |
| 2026-06-07 00:00 |
01:33:19.80 |
+84:34:57.1 |
HIP 7592 |
8.78 |
| 2026-06-07 12:00 |
01:33:27.20 |
+84:35:11.8 |
HIP 7592 |
8.83 |
| 2026-06-08 00:00 |
01:33:34.54 |
+84:35:26.6 |
HIP 7592 |
8.89 |
| 2026-06-08 12:00 |
01:33:41.81 |
+84:35:41.5 |
HIP 7592 |
8.96 |
| 2026-06-09 00:00 |
01:33:49.02 |
+84:35:56.4 |
HIP 7592 |
9.04 |
| 2026-06-09 12:00 |
01:33:56.15 |
+84:36:11.4 |
HIP 7592 |
9.13 |
| 2026-06-10 00:00 |
01:34:03.21 |
+84:36:26.5 |
HIP 7592 |
9.24 |
| 2026-06-10 12:00 |
01:34:10.21 |
+84:36:41.6 |
HIP 7592 |
9.35 |
| 2026-06-11 00:00 |
01:34:17.13 |
+84:36:56.8 |
HIP 7592 |
9.48 |
| 2026-06-11 12:00 |
01:34:23.98 |
+84:37:12.1 |
HIP 7592 |
9.61 |
| 2026-06-12 00:00 |
01:34:30.76 |
+84:37:27.5 |
HIP 7592 |
9.75 |
| 2026-06-12 12:00 |
01:34:37.47 |
+84:37:42.9 |
HIP 7592 |
9.91 |
| 2026-06-13 00:00 |
01:34:44.10 |
+84:37:58.4 |
HIP 7592 |
10.07 |
| 2026-06-13 12:00 |
01:34:50.66 |
+84:38:13.9 |
HIP 7592 |
10.24 |
| 2026-06-14 00:00 |
01:34:57.15 |
+84:38:29.6 |
HIP 7592 |
10.42 |
| 2026-06-14 12:00 |
01:35:03.56 |
+84:38:45.2 |
HIP 7592 |
10.60 |
| 2026-06-15 00:00 |
01:35:09.89 |
+84:39:01.0 |
HIP 7592 |
10.79 |
| 2026-06-15 12:00 |
01:35:16.15 |
+84:39:16.8 |
HIP 7592 |
10.99 |
| 2026-06-16 00:00 |
01:35:22.33 |
+84:39:32.7 |
HIP 7592 |
11.20 |
| 2026-06-16 12:00 |
01:35:28.43 |
+84:39:48.6 |
HIP 7592 |
11.41 |
| 2026-06-17 00:00 |
01:35:34.46 |
+84:40:04.6 |
HIP 7592 |
11.63 |
| 2026-06-17 12:00 |
01:35:40.40 |
+84:40:20.6 |
HIP 7592 |
11.85 |
| 2026-06-18 00:00 |
01:35:46.27 |
+84:40:36.7 |
HIP 7592 |
12.07 |
| 2026-06-18 12:00 |
01:35:52.05 |
+84:40:52.9 |
HIP 7592 |
12.30 |
| 2026-06-19 00:00 |
01:35:57.76 |
+84:41:09.1 |
HIP 7592 |
12.54 |
| 2026-06-19 12:00 |
01:36:03.38 |
+84:41:25.4 |
HIP 7592 |
12.78 |
| 2026-06-20 00:00 |
01:36:08.92 |
+84:41:41.7 |
HIP 7592 |
13.02 |
| 2026-06-20 12:00 |
01:36:14.38 |
+84:41:58.1 |
HIP 7592 |
13.27 |
| 2026-06-21 00:00 |
01:36:19.76 |
+84:42:14.5 |
HIP 7592 |
13.52 |
| 2026-06-21 12:00 |
01:36:25.06 |
+84:42:31.0 |
HIP 7592 |
13.77 |
| 2026-06-22 00:00 |
01:36:30.27 |
+84:42:47.5 |
HIP 7592 |
14.03 |