| Parameter |
Value |
| Designation |
92P/Sanguin |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2002-09-23T00:27:20.165760Z |
| Orbit solution date (soln_date, UTC) |
2026-06-22T10:17:36Z |
| Obs used |
952 |
| NEO |
- |
| M1 |
11.600 |
| K1 |
15.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2003-12-09.0000000 |
| e |
0.66312972 |
| q (au) |
1.807849 |
| a (au) |
5.366603 |
| i (deg) |
18.764751 |
| Ω (om, deg) |
182.342677 |
| ω (w, deg) |
163.064416 |
| M (ma, deg) |
35.039547 |
Magnitude
Scatter + Global Linear
$$
M_a = (17.783 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
17.783 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.590 |
| k |
0.800 |
| 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
Residuals (Piecewise)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| Start (UTC) |
End (UTC) |
a |
b |
| 2014-04-30 |
2014-08-21 |
+1.5336 |
-0.375 |
| 2015-09-19 |
2016-01-13 |
+4.8411 |
-2.744 |
log10 r = log10(heliocentric distance / AU), Δ = geocentric distance (AU)
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-25 00:00 |
15:36:24.16 |
-03:29:53.3 |
HIP 76356 |
10.57 |
| 2026-09-25 12:00 |
15:36:55.40 |
-03:32:45.1 |
HIP 76528 |
13.02 |
| 2026-09-26 00:00 |
15:37:26.81 |
-03:35:36.8 |
HIP 76528 |
4.73 |
| 2026-09-26 12:00 |
15:37:58.40 |
-03:38:28.3 |
HIP 76528 |
3.86 |
| 2026-09-27 00:00 |
15:38:30.16 |
-03:41:19.6 |
HIP 76528 |
12.20 |
| 2026-09-27 12:00 |
15:39:02.09 |
-03:44:10.7 |
HIP 76528 |
20.65 |
| 2026-09-28 00:00 |
15:39:34.20 |
-03:47:01.6 |
HIP 76784 |
24.32 |
| 2026-09-28 12:00 |
15:40:06.47 |
-03:49:52.3 |
HIP 76784 |
22.58 |
| 2026-09-29 00:00 |
15:40:38.92 |
-03:52:42.8 |
HIP 76784 |
23.97 |
| 2026-09-29 12:00 |
15:41:11.53 |
-03:55:33.1 |
HIP 76784 |
28.04 |
| 2026-09-30 00:00 |
15:41:44.32 |
-03:58:23.2 |
HIP 77008 |
25.29 |
| 2026-09-30 12:00 |
15:42:17.28 |
-04:01:13.0 |
HIP 77008 |
17.68 |
| 2026-10-01 00:00 |
15:42:50.40 |
-04:04:02.6 |
HIP 77008 |
11.64 |
| 2026-10-01 12:00 |
15:43:23.70 |
-04:06:52.0 |
HIP 77008 |
10.53 |
| 2026-10-02 00:00 |
15:43:57.16 |
-04:09:41.1 |
HIP 77008 |
15.52 |
| 2026-10-02 12:00 |
15:44:30.80 |
-04:12:29.9 |
HIP 77089 |
22.22 |
| 2026-10-03 00:00 |
15:45:04.60 |
-04:15:18.5 |
HIP 77266 |
24.48 |
| 2026-10-03 12:00 |
15:45:38.57 |
-04:18:06.7 |
HIP 77266 |
19.51 |
| 2026-10-04 00:00 |
15:46:12.70 |
-04:20:54.7 |
HIP 77266 |
17.89 |
| 2026-10-04 12:00 |
15:46:47.00 |
-04:23:42.4 |
HIP 77266 |
20.51 |
| 2026-10-05 00:00 |
15:47:21.47 |
-04:26:29.8 |
HIP 77410 |
24.17 |
| 2026-10-05 12:00 |
15:47:56.11 |
-04:29:16.8 |
HIP 77410 |
18.30 |
| 2026-10-06 00:00 |
15:48:30.90 |
-04:32:03.5 |
HIP 77410 |
15.83 |
| 2026-10-06 12:00 |
15:49:05.87 |
-04:34:49.9 |
HIP 77410 |
18.25 |
| 2026-10-07 00:00 |
15:49:41.00 |
-04:37:35.9 |
HIP 77486 |
20.90 |
| 2026-10-07 12:00 |
15:50:16.29 |
-04:40:21.6 |
HIP 77486 |
22.63 |
| 2026-10-08 00:00 |
15:50:51.75 |
-04:43:06.9 |
HIP 77486 |
27.56 |
| 2026-10-08 12:00 |
15:51:27.37 |
-04:45:51.9 |
HIP 77486 |
34.36 |
| 2026-10-09 00:00 |
15:52:03.15 |
-04:48:36.4 |
HIP 77843 |
30.86 |
| 2026-10-09 12:00 |
15:52:39.10 |
-04:51:20.6 |
HIP 77843 |
26.73 |
| 2026-10-10 00:00 |
15:53:15.20 |
-04:54:04.4 |
HIP 77876 |
23.70 |
| 2026-10-10 12:00 |
15:53:51.47 |
-04:56:47.7 |
HIP 77876 |
17.20 |
| 2026-10-11 00:00 |
15:54:27.89 |
-04:59:30.6 |
HIP 77876 |
14.43 |
| 2026-10-11 12:00 |
15:55:04.48 |
-05:02:13.1 |
HIP 77876 |
17.36 |
| 2026-10-12 00:00 |
15:55:41.23 |
-05:04:55.2 |
HIP 77876 |
24.02 |
| 2026-10-12 12:00 |
15:56:18.13 |
-05:07:36.8 |
HIP 78125 |
20.68 |
| 2026-10-13 00:00 |
15:56:55.19 |
-05:10:17.9 |
HIP 78125 |
14.05 |
| 2026-10-13 12:00 |
15:57:32.41 |
-05:12:58.6 |
HIP 78125 |
12.34 |
| 2026-10-14 00:00 |
15:58:09.78 |
-05:15:38.8 |
HIP 78125 |
17.17 |
| 2026-10-14 12:00 |
15:58:47.31 |
-05:18:18.5 |
HIP 78304 |
17.33 |
| 2026-10-15 00:00 |
15:59:24.99 |
-05:20:57.7 |
HIP 78304 |
12.73 |
| 2026-10-15 12:00 |
16:00:02.83 |
-05:23:36.4 |
HIP 78304 |
14.66 |
| 2026-10-16 00:00 |
16:00:40.83 |
-05:26:14.6 |
HIP 78509 |
21.30 |