| Parameter |
Value |
| Designation |
C/2004 B1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2006-02-07T21:19:48.656640Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:36Z |
| Obs used |
1832 |
| NEO |
- |
| M1 |
12.300 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2006-04-08.0000000 |
| e |
1.00130658 |
| q (au) |
1.601945 |
| a (au) |
-1226.056929 |
| i (deg) |
114.096847 |
| Ω (om, deg) |
272.801879 |
| ω (w, deg) |
327.900869 |
| M (ma, deg) |
0.001357 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.202 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.202 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.888 |
| k |
0.984 |
| δ90 |
9.997 |
| 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 |
| 2004-01-28 |
2004-09-29 |
+13.6677 |
-11.312 |
| 2004-09-29 |
2005-01-16 |
-0.8818 |
-0.030 |
| 2005-01-16 |
2005-10-02 |
+2.3681 |
-2.742 |
| 2005-10-02 |
2005-12-24 |
-13.2191 |
+2.440 |
| 2006-03-13 |
2006-06-07 |
+23.6893 |
-8.038 |
| 2006-06-07 |
2006-08-02 |
-7.5231 |
+3.109 |
| 2006-08-02 |
2006-09-09 |
-16.0328 |
+7.184 |
| 2006-09-09 |
2008-08-24 |
+2.9106 |
-2.019 |
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 |
09:52:33.38 |
+66:16:50.3 |
HIP 48214 |
23.67 |
| 2026-03-26 12:00 |
09:52:27.66 |
+66:16:34.1 |
HIP 48214 |
23.47 |
| 2026-03-27 00:00 |
09:52:21.97 |
+66:16:17.7 |
HIP 48214 |
23.29 |
| 2026-03-27 12:00 |
09:52:16.32 |
+66:16:00.9 |
HIP 48214 |
23.14 |
| 2026-03-28 00:00 |
09:52:10.72 |
+66:15:43.9 |
HIP 48214 |
23.01 |
| 2026-03-28 12:00 |
09:52:05.17 |
+66:15:26.5 |
HIP 48214 |
22.90 |
| 2026-03-29 00:00 |
09:51:59.65 |
+66:15:08.9 |
HIP 48214 |
22.81 |
| 2026-03-29 12:00 |
09:51:54.18 |
+66:14:51.0 |
HIP 48214 |
22.75 |
| 2026-03-30 00:00 |
09:51:48.76 |
+66:14:32.8 |
HIP 48214 |
22.71 |
| 2026-03-30 12:00 |
09:51:43.38 |
+66:14:14.4 |
HIP 48214 |
22.70 |
| 2026-03-31 00:00 |
09:51:38.05 |
+66:13:55.6 |
HIP 48214 |
22.70 |
| 2026-03-31 12:00 |
09:51:32.76 |
+66:13:36.6 |
HIP 48214 |
22.73 |
| 2026-04-01 00:00 |
09:51:27.52 |
+66:13:17.3 |
HIP 48214 |
22.78 |
| 2026-04-01 12:00 |
09:51:22.32 |
+66:12:57.7 |
HIP 48214 |
22.86 |
| 2026-04-02 00:00 |
09:51:17.17 |
+66:12:37.9 |
HIP 48214 |
22.96 |
| 2026-04-02 12:00 |
09:51:12.07 |
+66:12:17.8 |
HIP 48214 |
23.07 |
| 2026-04-03 00:00 |
09:51:07.01 |
+66:11:57.4 |
HIP 48214 |
23.21 |
| 2026-04-03 12:00 |
09:51:02.01 |
+66:11:36.8 |
HIP 48214 |
23.38 |
| 2026-04-04 00:00 |
09:50:57.05 |
+66:11:15.9 |
HIP 48214 |
23.56 |
| 2026-04-04 12:00 |
09:50:52.13 |
+66:10:54.7 |
HIP 48214 |
23.76 |
| 2026-04-05 00:00 |
09:50:47.27 |
+66:10:33.3 |
HIP 48214 |
23.98 |
| 2026-04-05 12:00 |
09:50:42.46 |
+66:10:11.6 |
HIP 48214 |
24.21 |
| 2026-04-06 00:00 |
09:50:37.69 |
+66:09:49.7 |
HIP 48214 |
24.47 |
| 2026-04-06 12:00 |
09:50:32.98 |
+66:09:27.5 |
HIP 48214 |
24.74 |
| 2026-04-07 00:00 |
09:50:28.31 |
+66:09:05.0 |
HIP 48214 |
25.03 |
| 2026-04-07 12:00 |
09:50:23.69 |
+66:08:42.3 |
HIP 48214 |
25.33 |
| 2026-04-08 00:00 |
09:50:19.13 |
+66:08:19.4 |
HIP 48214 |
25.65 |
| 2026-04-08 12:00 |
09:50:14.61 |
+66:07:56.2 |
HIP 48214 |
25.99 |
| 2026-04-09 00:00 |
09:50:10.15 |
+66:07:32.8 |
HIP 48214 |
26.33 |
| 2026-04-09 12:00 |
09:50:05.73 |
+66:07:09.1 |
HIP 48214 |
26.69 |
| 2026-04-10 00:00 |
09:50:01.37 |
+66:06:45.2 |
HIP 48214 |
27.07 |
| 2026-04-10 12:00 |
09:49:57.06 |
+66:06:21.0 |
HIP 48214 |
27.45 |
| 2026-04-11 00:00 |
09:49:52.80 |
+66:05:56.6 |
HIP 48214 |
27.85 |
| 2026-04-11 12:00 |
09:49:48.60 |
+66:05:32.0 |
HIP 48214 |
28.25 |
| 2026-04-12 00:00 |
09:49:44.44 |
+66:05:07.1 |
HIP 48214 |
28.67 |
| 2026-04-12 12:00 |
09:49:40.34 |
+66:04:42.1 |
HIP 48214 |
29.10 |
| 2026-04-13 00:00 |
09:49:36.29 |
+66:04:16.8 |
HIP 48266 |
29.09 |
| 2026-04-13 12:00 |
09:49:32.30 |
+66:03:51.2 |
HIP 48266 |
28.74 |
| 2026-04-14 00:00 |
09:49:28.36 |
+66:03:25.5 |
HIP 48266 |
28.40 |
| 2026-04-14 12:00 |
09:49:24.47 |
+66:02:59.5 |
HIP 48266 |
28.06 |
| 2026-04-15 00:00 |
09:49:20.63 |
+66:02:33.3 |
HIP 48266 |
27.72 |
| 2026-04-15 12:00 |
09:49:16.85 |
+66:02:06.9 |
HIP 48266 |
27.39 |
| 2026-04-16 00:00 |
09:49:13.13 |
+66:01:40.3 |
HIP 48266 |
27.06 |