| 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) |
| 2026-03-26 00:00 |
16:01:59.23 |
+08:07:05.0 |
HIP 78414 |
23.75 |
| 2026-03-26 12:00 |
16:01:57.29 |
+08:07:51.7 |
HIP 78414 |
23.52 |
| 2026-03-27 00:00 |
16:01:55.29 |
+08:08:38.3 |
HIP 78414 |
23.30 |
| 2026-03-27 12:00 |
16:01:53.25 |
+08:09:24.8 |
HIP 78414 |
23.11 |
| 2026-03-28 00:00 |
16:01:51.16 |
+08:10:11.3 |
HIP 78414 |
22.94 |
| 2026-03-28 12:00 |
16:01:49.02 |
+08:10:57.6 |
HIP 78414 |
22.80 |
| 2026-03-29 00:00 |
16:01:46.84 |
+08:11:43.9 |
HIP 78414 |
22.68 |
| 2026-03-29 12:00 |
16:01:44.61 |
+08:12:30.0 |
HIP 78414 |
22.60 |
| 2026-03-30 00:00 |
16:01:42.34 |
+08:13:16.0 |
HIP 78414 |
22.54 |
| 2026-03-30 12:00 |
16:01:40.02 |
+08:14:02.0 |
HIP 78414 |
22.51 |
| 2026-03-31 00:00 |
16:01:37.65 |
+08:14:47.8 |
HIP 78414 |
22.51 |
| 2026-03-31 12:00 |
16:01:35.24 |
+08:15:33.5 |
HIP 78414 |
22.55 |
| 2026-04-01 00:00 |
16:01:32.78 |
+08:16:19.1 |
HIP 78414 |
22.61 |
| 2026-04-01 12:00 |
16:01:30.28 |
+08:17:04.5 |
HIP 78414 |
22.71 |
| 2026-04-02 00:00 |
16:01:27.73 |
+08:17:49.8 |
HIP 78414 |
22.84 |
| 2026-04-02 12:00 |
16:01:25.14 |
+08:18:35.0 |
HIP 78364 |
22.80 |
| 2026-04-03 00:00 |
16:01:22.51 |
+08:19:20.1 |
HIP 78364 |
21.97 |
| 2026-04-03 12:00 |
16:01:19.83 |
+08:20:05.0 |
HIP 78364 |
21.14 |
| 2026-04-04 00:00 |
16:01:17.11 |
+08:20:49.8 |
HIP 78364 |
20.32 |
| 2026-04-04 12:00 |
16:01:14.35 |
+08:21:34.4 |
HIP 78364 |
19.51 |
| 2026-04-05 00:00 |
16:01:11.54 |
+08:22:18.9 |
HIP 78364 |
18.70 |
| 2026-04-05 12:00 |
16:01:08.69 |
+08:23:03.2 |
HIP 78364 |
17.91 |
| 2026-04-06 00:00 |
16:01:05.80 |
+08:23:47.4 |
HIP 78364 |
17.13 |
| 2026-04-06 12:00 |
16:01:02.87 |
+08:24:31.4 |
HIP 78364 |
16.36 |
| 2026-04-07 00:00 |
16:00:59.90 |
+08:25:15.2 |
HIP 78364 |
15.62 |
| 2026-04-07 12:00 |
16:00:56.88 |
+08:25:58.9 |
HIP 78364 |
14.90 |
| 2026-04-08 00:00 |
16:00:53.83 |
+08:26:42.4 |
HIP 78364 |
14.22 |
| 2026-04-08 12:00 |
16:00:50.73 |
+08:27:25.7 |
HIP 78364 |
13.56 |
| 2026-04-09 00:00 |
16:00:47.60 |
+08:28:08.9 |
HIP 78364 |
12.95 |
| 2026-04-09 12:00 |
16:00:44.42 |
+08:28:51.8 |
HIP 78364 |
12.39 |
| 2026-04-10 00:00 |
16:00:41.21 |
+08:29:34.6 |
HIP 78383 |
11.48 |
| 2026-04-10 12:00 |
16:00:37.95 |
+08:30:17.2 |
HIP 78383 |
10.41 |
| 2026-04-11 00:00 |
16:00:34.66 |
+08:30:59.6 |
HIP 78383 |
9.33 |
| 2026-04-11 12:00 |
16:00:31.33 |
+08:31:41.7 |
HIP 78383 |
8.25 |
| 2026-04-12 00:00 |
16:00:27.96 |
+08:32:23.7 |
HIP 78383 |
7.16 |
| 2026-04-12 12:00 |
16:00:24.56 |
+08:33:05.5 |
HIP 78383 |
6.07 |
| 2026-04-13 00:00 |
16:00:21.11 |
+08:33:47.1 |
HIP 78383 |
4.97 |
| 2026-04-13 12:00 |
16:00:17.63 |
+08:34:28.4 |
HIP 78383 |
3.87 |
| 2026-04-14 00:00 |
16:00:14.12 |
+08:35:09.5 |
HIP 78383 |
2.77 |
| 2026-04-14 12:00 |
16:00:10.56 |
+08:35:50.4 |
HIP 78383 |
1.67 |
| 2026-04-15 00:00 |
16:00:06.97 |
+08:36:31.1 |
HIP 78383 |
0.63 |
| 2026-04-15 12:00 |
16:00:03.35 |
+08:37:11.5 |
HIP 78383 |
0.71 |
| 2026-04-16 00:00 |
15:59:59.69 |
+08:37:51.8 |
HIP 78383 |
1.77 |