메타데이터
| 항목 |
값 |
| Designation |
C/2009 B2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2009-03-07T09:25:59.010240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:28Z |
| Obs used |
187 |
| NEO |
- |
| M1 |
13.000 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2009-03-11.0000000 |
| e |
0.94428145 |
| q (au) |
2.327612 |
| a (au) |
41.774447 |
| i (deg) |
156.872979 |
| Ω (om, deg) |
18.814641 |
| ω (w, deg) |
192.495776 |
| M (ma, deg) |
0.013167 |
밝기
산란 + 전체 선형
$$
M_a = (14.370 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.370 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.916 |
| k |
1.000 |
| δ90 |
10.000 |
| 파라미터 |
기호 |
범위 |
설명 |
| 태양·지구거리 1 AU에서의 절대등급 |
H0 |
-5 to 20 |
혜성의 고유 밝기 |
| 광도 기울기 파라미터 |
n |
2 to 6 |
태양거리 변화에 따른 밝기 변화율 |
| 전방 산란 비대칭 계수 |
gf |
0.8 to 1 |
전방 산란의 강도 |
| 후방 산란 비대칭 계수 |
gb |
-1 to -0.5 |
후방 산란의 강도 |
| 분할 계수 |
k |
0.8 to 1 |
전·후방 산란 기여도 비율 |
| 먼지/가스 밝기 비 |
δ90 |
1 to 10 |
코마에서 먼지 산란 대비 가스 방출의 상대 기여 |
참고: EPSC-DPS2025-160
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
02:00:49.87 |
+07:22:48.7 |
HIP 9355 |
29.22 |
| 2026-05-12 12:00 |
02:00:52.86 |
+07:23:04.9 |
HIP 9355 |
29.71 |
| 2026-05-13 00:00 |
02:00:55.84 |
+07:23:21.1 |
HIP 9355 |
30.22 |
| 2026-05-13 12:00 |
02:00:58.81 |
+07:23:37.1 |
HIP 9355 |
30.74 |
| 2026-05-14 00:00 |
02:01:01.77 |
+07:23:53.1 |
HIP 9473 |
30.67 |
| 2026-05-14 12:00 |
02:01:04.72 |
+07:24:09.0 |
HIP 9473 |
30.13 |
| 2026-05-15 00:00 |
02:01:07.66 |
+07:24:24.8 |
HIP 9473 |
29.61 |
| 2026-05-15 12:00 |
02:01:10.59 |
+07:24:40.4 |
HIP 9473 |
29.10 |
| 2026-05-16 00:00 |
02:01:13.51 |
+07:24:56.0 |
HIP 9473 |
28.61 |
| 2026-05-16 12:00 |
02:01:16.41 |
+07:25:11.6 |
HIP 9473 |
28.13 |
| 2026-05-17 00:00 |
02:01:19.31 |
+07:25:27.0 |
HIP 9473 |
27.66 |
| 2026-05-17 12:00 |
02:01:22.20 |
+07:25:42.3 |
HIP 9473 |
27.21 |
| 2026-05-18 00:00 |
02:01:25.07 |
+07:25:57.5 |
HIP 9473 |
26.78 |
| 2026-05-18 12:00 |
02:01:27.94 |
+07:26:12.6 |
HIP 9473 |
26.37 |
| 2026-05-19 00:00 |
02:01:30.79 |
+07:26:27.6 |
HIP 9473 |
25.97 |
| 2026-05-19 12:00 |
02:01:33.63 |
+07:26:42.5 |
HIP 9473 |
25.59 |
| 2026-05-20 00:00 |
02:01:36.45 |
+07:26:57.3 |
HIP 9473 |
25.23 |
| 2026-05-20 12:00 |
02:01:39.27 |
+07:27:12.0 |
HIP 9473 |
24.88 |
| 2026-05-21 00:00 |
02:01:42.07 |
+07:27:26.6 |
HIP 9473 |
24.56 |
| 2026-05-21 12:00 |
02:01:44.86 |
+07:27:41.1 |
HIP 9473 |
24.26 |
| 2026-05-22 00:00 |
02:01:47.64 |
+07:27:55.4 |
HIP 9548 |
23.81 |
| 2026-05-22 12:00 |
02:01:50.40 |
+07:28:09.7 |
HIP 9548 |
23.23 |
| 2026-05-23 00:00 |
02:01:53.15 |
+07:28:23.9 |
HIP 9548 |
22.66 |
| 2026-05-23 12:00 |
02:01:55.89 |
+07:28:37.9 |
HIP 9548 |
22.10 |
| 2026-05-24 00:00 |
02:01:58.61 |
+07:28:51.9 |
HIP 9548 |
21.55 |
| 2026-05-24 12:00 |
02:02:01.32 |
+07:29:05.7 |
HIP 9548 |
21.02 |
| 2026-05-25 00:00 |
02:02:04.01 |
+07:29:19.4 |
HIP 9548 |
20.51 |
| 2026-05-25 12:00 |
02:02:06.69 |
+07:29:33.0 |
HIP 9548 |
20.00 |
| 2026-05-26 00:00 |
02:02:09.36 |
+07:29:46.5 |
HIP 9548 |
19.52 |
| 2026-05-26 12:00 |
02:02:12.01 |
+07:29:59.9 |
HIP 9548 |
19.04 |
| 2026-05-27 00:00 |
02:02:14.64 |
+07:30:13.2 |
HIP 9548 |
18.59 |
| 2026-05-27 12:00 |
02:02:17.26 |
+07:30:26.3 |
HIP 9548 |
18.15 |
| 2026-05-28 00:00 |
02:02:19.87 |
+07:30:39.3 |
HIP 9548 |
17.74 |
| 2026-05-28 12:00 |
02:02:22.46 |
+07:30:52.2 |
HIP 9548 |
17.34 |
| 2026-05-29 00:00 |
02:02:25.03 |
+07:31:05.0 |
HIP 9548 |
16.96 |
| 2026-05-29 12:00 |
02:02:27.59 |
+07:31:17.7 |
HIP 9548 |
16.61 |
| 2026-05-30 00:00 |
02:02:30.13 |
+07:31:30.3 |
HIP 9548 |
16.27 |
| 2026-05-30 12:00 |
02:02:32.66 |
+07:31:42.7 |
HIP 9548 |
15.96 |
| 2026-05-31 00:00 |
02:02:35.17 |
+07:31:55.0 |
HIP 9548 |
15.68 |
| 2026-05-31 12:00 |
02:02:37.66 |
+07:32:07.2 |
HIP 9548 |
15.42 |
| 2026-06-01 00:00 |
02:02:40.14 |
+07:32:19.3 |
HIP 9548 |
15.18 |
| 2026-06-01 12:00 |
02:02:42.60 |
+07:32:31.3 |
HIP 9548 |
14.97 |
| 2026-06-02 00:00 |
02:02:45.05 |
+07:32:43.1 |
HIP 9548 |
14.79 |