| Parameter |
Value |
| Designation |
167P/CINEOS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2001-04-09T20:35:06.921600Z |
| Orbit solution date (soln_date, UTC) |
2025-12-10T08:26:50Z |
| Obs used |
96 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2004-03-28.0000000 |
| e |
0.27000580 |
| q (au) |
11.783420 |
| a (au) |
16.141799 |
| i (deg) |
19.126732 |
| Ω (om, deg) |
295.837117 |
| ω (w, deg) |
343.646343 |
| M (ma, deg) |
16.461207 |
Magnitude
Scatter + Global Linear
$$
M_a = (16.538 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
16.538 |
| n |
2.000 |
| gf |
0.951 |
| gb |
-0.918 |
| k |
0.800 |
| δ90 |
9.963 |
| 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 |
04:53:21.06 |
+34:26:49.8 |
HIP 22639 |
13.83 |
| 2026-06-01 12:00 |
04:53:29.09 |
+34:26:55.4 |
HIP 22639 |
15.48 |
| 2026-06-02 00:00 |
04:53:37.13 |
+34:27:01.1 |
HIP 22718 |
16.53 |
| 2026-06-02 12:00 |
04:53:45.17 |
+34:27:07.0 |
HIP 22718 |
17.13 |
| 2026-06-03 00:00 |
04:53:53.21 |
+34:27:13.0 |
HIP 22718 |
17.87 |
| 2026-06-03 12:00 |
04:54:01.25 |
+34:27:19.1 |
HIP 22718 |
18.72 |
| 2026-06-04 00:00 |
04:54:09.30 |
+34:27:25.3 |
HIP 22718 |
19.67 |
| 2026-06-04 12:00 |
04:54:17.35 |
+34:27:31.6 |
HIP 22718 |
20.71 |
| 2026-06-05 00:00 |
04:54:25.40 |
+34:27:38.1 |
HIP 22718 |
21.83 |
| 2026-06-05 12:00 |
04:54:33.45 |
+34:27:44.6 |
HIP 22718 |
23.01 |
| 2026-06-06 00:00 |
04:54:41.50 |
+34:27:51.3 |
HIP 22718 |
24.25 |
| 2026-06-06 12:00 |
04:54:49.55 |
+34:27:58.1 |
HIP 22718 |
25.53 |
| 2026-06-07 00:00 |
04:54:57.60 |
+34:28:05.0 |
HIP 22718 |
26.86 |
| 2026-06-07 12:00 |
04:55:05.65 |
+34:28:12.0 |
HIP 22718 |
28.22 |
| 2026-06-08 00:00 |
04:55:13.70 |
+34:28:19.1 |
HIP 22718 |
29.60 |
| 2026-06-08 12:00 |
04:55:21.75 |
+34:28:26.3 |
HIP 22718 |
31.02 |
| 2026-06-09 00:00 |
04:55:29.80 |
+34:28:33.7 |
HIP 22718 |
32.45 |
| 2026-06-09 12:00 |
04:55:37.85 |
+34:28:41.1 |
HIP 23080 |
31.72 |
| 2026-06-10 00:00 |
04:55:45.89 |
+34:28:48.7 |
HIP 23080 |
30.25 |
| 2026-06-10 12:00 |
04:55:53.93 |
+34:28:56.4 |
HIP 23080 |
28.81 |
| 2026-06-11 00:00 |
04:56:01.97 |
+34:29:04.1 |
HIP 23080 |
27.40 |
| 2026-06-11 12:00 |
04:56:10.00 |
+34:29:12.0 |
HIP 23080 |
26.02 |
| 2026-06-12 00:00 |
04:56:18.03 |
+34:29:20.0 |
HIP 23080 |
24.67 |
| 2026-06-12 12:00 |
04:56:26.05 |
+34:29:28.1 |
HIP 23080 |
23.36 |
| 2026-06-13 00:00 |
04:56:34.07 |
+34:29:36.3 |
HIP 23080 |
22.11 |
| 2026-06-13 12:00 |
04:56:42.09 |
+34:29:44.6 |
HIP 23080 |
20.91 |
| 2026-06-14 00:00 |
04:56:50.09 |
+34:29:53.0 |
HIP 23080 |
19.79 |
| 2026-06-14 12:00 |
04:56:58.10 |
+34:30:01.5 |
HIP 23080 |
18.74 |
| 2026-06-15 00:00 |
04:57:06.09 |
+34:30:10.1 |
HIP 23080 |
17.79 |
| 2026-06-15 12:00 |
04:57:14.08 |
+34:30:18.9 |
HIP 23080 |
16.96 |
| 2026-06-16 00:00 |
04:57:22.06 |
+34:30:27.7 |
HIP 23080 |
16.24 |
| 2026-06-16 12:00 |
04:57:30.04 |
+34:30:36.6 |
HIP 23080 |
15.68 |
| 2026-06-17 00:00 |
04:57:38.00 |
+34:30:45.6 |
HIP 23132 |
14.55 |
| 2026-06-17 12:00 |
04:57:45.96 |
+34:30:54.7 |
HIP 23132 |
13.24 |
| 2026-06-18 00:00 |
04:57:53.90 |
+34:31:03.9 |
HIP 23132 |
12.01 |
| 2026-06-18 12:00 |
04:58:01.84 |
+34:31:13.3 |
HIP 23132 |
10.89 |
| 2026-06-19 00:00 |
04:58:09.77 |
+34:31:22.7 |
HIP 23132 |
9.92 |
| 2026-06-19 12:00 |
04:58:17.69 |
+34:31:32.2 |
HIP 23132 |
9.15 |
| 2026-06-20 00:00 |
04:58:25.59 |
+34:31:41.8 |
HIP 23132 |
8.63 |
| 2026-06-20 12:00 |
04:58:33.49 |
+34:31:51.5 |
HIP 23132 |
8.40 |
| 2026-06-21 00:00 |
04:58:41.37 |
+34:32:01.3 |
HIP 23132 |
8.49 |
| 2026-06-21 12:00 |
04:58:49.24 |
+34:32:11.2 |
HIP 23132 |
8.89 |
| 2026-06-22 00:00 |
04:58:57.10 |
+34:32:21.2 |
HIP 23132 |
9.55 |