C/2014 B1 (Schwartz)
| Parameter |
Value |
| Designation |
C/2014 B1 (Schwartz) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2017-09-10T20:55:53.734080Z |
| Orbit solution date (soln_date, UTC) |
2022-04-30T03:12:27Z |
| Obs used |
1276 |
| NEO |
- |
| M1 |
6.200 |
| K1 |
6.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2018-02-16.0000000 |
| e |
1.00321505 |
| q (au) |
9.556680 |
| a (au) |
-2972.479051 |
| i (deg) |
28.375526 |
| Ω (om, deg) |
161.394483 |
| ω (w, deg) |
345.859143 |
| M (ma, deg) |
0.000962 |
Magnitude
Scatter + Global Linear
$$
M_a = (-2.963 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
-2.963 |
| n |
6.000 |
| gf |
0.902 |
| gb |
-0.937 |
| k |
1.000 |
| δ90 |
3.984 |
| 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 |
| 2014-01-28 |
2017-06-16 |
+8.9133 |
-9.153 |
| 2017-11-15 |
2022-04-24 |
+7.9408 |
-8.013 |
log10 r = log10(heliocentric distance / AU), Δ = geocentric distance (AU)
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
16:00:40.47 |
+06:52:30.4 |
HIP 78390 |
7.45 |
| 2026-02-03 12:00 |
16:00:43.94 |
+06:53:05.3 |
HIP 78390 |
8.48 |
| 2026-02-04 00:00 |
16:00:47.36 |
+06:53:40.5 |
HIP 78390 |
9.51 |
| 2026-02-04 12:00 |
16:00:50.73 |
+06:54:16.0 |
HIP 78390 |
10.54 |
| 2026-02-05 00:00 |
16:00:54.06 |
+06:54:51.8 |
HIP 78390 |
11.55 |
| 2026-02-05 12:00 |
16:00:57.33 |
+06:55:27.8 |
HIP 78390 |
12.56 |
| 2026-02-06 00:00 |
16:01:00.55 |
+06:56:04.1 |
HIP 78390 |
13.55 |
| 2026-02-06 12:00 |
16:01:03.72 |
+06:56:40.7 |
HIP 78390 |
14.55 |
| 2026-02-07 00:00 |
16:01:06.83 |
+06:57:17.5 |
HIP 78390 |
15.53 |
| 2026-02-07 12:00 |
16:01:09.90 |
+06:57:54.6 |
HIP 78390 |
16.50 |
| 2026-02-08 00:00 |
16:01:12.91 |
+06:58:32.0 |
HIP 78390 |
17.47 |
| 2026-02-08 12:00 |
16:01:15.87 |
+06:59:09.6 |
HIP 78390 |
18.43 |
| 2026-02-09 00:00 |
16:01:18.78 |
+06:59:47.4 |
HIP 78546 |
18.62 |
| 2026-02-09 12:00 |
16:01:21.64 |
+07:00:25.6 |
HIP 78546 |
17.67 |
| 2026-02-10 00:00 |
16:01:24.44 |
+07:01:03.9 |
HIP 78546 |
16.73 |
| 2026-02-10 12:00 |
16:01:27.19 |
+07:01:42.6 |
HIP 78546 |
15.80 |
| 2026-02-11 00:00 |
16:01:29.89 |
+07:02:21.4 |
HIP 78546 |
14.87 |
| 2026-02-11 12:00 |
16:01:32.54 |
+07:03:00.5 |
HIP 78546 |
13.95 |
| 2026-02-12 00:00 |
16:01:35.13 |
+07:03:39.9 |
HIP 78546 |
13.03 |
| 2026-02-12 12:00 |
16:01:37.67 |
+07:04:19.5 |
HIP 78546 |
12.12 |
| 2026-02-13 00:00 |
16:01:40.16 |
+07:04:59.3 |
HIP 78546 |
11.21 |
| 2026-02-13 12:00 |
16:01:42.59 |
+07:05:39.3 |
HIP 78546 |
10.31 |
| 2026-02-14 00:00 |
16:01:44.97 |
+07:06:19.6 |
HIP 78546 |
9.42 |
| 2026-02-14 12:00 |
16:01:47.29 |
+07:07:00.1 |
HIP 78546 |
8.53 |
| 2026-02-15 00:00 |
16:01:49.56 |
+07:07:40.8 |
HIP 78546 |
7.65 |
| 2026-02-15 12:00 |
16:01:51.78 |
+07:08:21.8 |
HIP 78546 |
6.77 |
| 2026-02-16 00:00 |
16:01:53.94 |
+07:09:02.9 |
HIP 78546 |
5.90 |
| 2026-02-16 12:00 |
16:01:56.05 |
+07:09:44.3 |
HIP 78546 |
5.04 |
| 2026-02-17 00:00 |
16:01:58.10 |
+07:10:25.8 |
HIP 78546 |
4.19 |
| 2026-02-17 12:00 |
16:02:00.10 |
+07:11:07.6 |
HIP 78546 |
3.34 |
| 2026-02-18 00:00 |
16:02:02.05 |
+07:11:49.6 |
HIP 78546 |
2.51 |
| 2026-02-18 12:00 |
16:02:03.94 |
+07:12:31.8 |
HIP 78546 |
1.70 |
| 2026-02-19 00:00 |
16:02:05.77 |
+07:13:14.1 |
HIP 78546 |
0.98 |
| 2026-02-19 12:00 |
16:02:07.55 |
+07:13:56.7 |
HIP 78546 |
0.67 |
| 2026-02-20 00:00 |
16:02:09.27 |
+07:14:39.4 |
HIP 78546 |
1.16 |
| 2026-02-20 12:00 |
16:02:10.94 |
+07:15:22.3 |
HIP 78546 |
1.90 |
| 2026-02-21 00:00 |
16:02:12.56 |
+07:16:05.4 |
HIP 78546 |
2.70 |
| 2026-02-21 12:00 |
16:02:14.12 |
+07:16:48.7 |
HIP 78546 |
3.50 |
| 2026-02-22 00:00 |
16:02:15.62 |
+07:17:32.2 |
HIP 78546 |
4.31 |
| 2026-02-22 12:00 |
16:02:17.07 |
+07:18:15.8 |
HIP 78546 |
5.11 |
| 2026-02-23 00:00 |
16:02:18.47 |
+07:18:59.6 |
HIP 78546 |
5.92 |
| 2026-02-23 12:00 |
16:02:19.81 |
+07:19:43.5 |
HIP 78546 |
6.72 |
| 2026-02-24 00:00 |
16:02:21.09 |
+07:20:27.6 |
HIP 78546 |
7.52 |