메타데이터
| 항목 |
값 |
| Designation |
C/2026 A2 (Bok) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2026-12-22T08:38:01.976640Z |
| Orbit solution date (soln_date, UTC) |
2026-05-28T12:12:17Z |
| Obs used |
408 |
| NEO |
- |
| M1 |
7.600 |
| K1 |
15.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2026-01-15T12:52:17.616000Z |
| Discovery magnitude (MPC) |
20.38 G |
| Discovery observatory (MPC) |
V00 · Kitt Peak-Bok |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2026-04-02.0000000 |
| e |
0.99758315 |
| q (au) |
1.937834 |
| a (au) |
801.802046 |
| i (deg) |
82.306371 |
| Ω (om, deg) |
206.591191 |
| ω (w, deg) |
155.936761 |
| M (ma, deg) |
359.988524 |
밝기
산란 + 전체 선형
$$
M_a = (6.831 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.831 |
| n |
6.000 |
| gf |
0.881 |
| gb |
-0.558 |
| k |
1.000 |
| δ90 |
4.226 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
18:22:19.89 |
+73:26:47.5 |
HIP 90502 |
31.08 |
| 2026-06-01 12:00 |
18:21:47.37 |
+73:34:15.9 |
HIP 89971 |
28.66 |
| 2026-06-02 00:00 |
18:21:13.86 |
+73:41:40.5 |
HIP 89971 |
21.22 |
| 2026-06-02 12:00 |
18:20:39.33 |
+73:49:01.3 |
HIP 89971 |
14.23 |
| 2026-06-03 00:00 |
18:20:03.79 |
+73:56:18.2 |
HIP 89971 |
8.68 |
| 2026-06-03 12:00 |
18:19:27.22 |
+74:03:31.2 |
HIP 89971 |
8.18 |
| 2026-06-04 00:00 |
18:18:49.62 |
+74:10:40.2 |
HIP 89971 |
13.23 |
| 2026-06-04 12:00 |
18:18:10.98 |
+74:17:45.2 |
HIP 89971 |
19.94 |
| 2026-06-05 00:00 |
18:17:31.29 |
+74:24:46.1 |
HIP 89188 |
22.40 |
| 2026-06-05 12:00 |
18:16:50.54 |
+74:31:42.8 |
HIP 89188 |
22.37 |
| 2026-06-06 00:00 |
18:16:08.72 |
+74:38:35.5 |
HIP 89140 |
23.84 |
| 2026-06-06 12:00 |
18:15:25.82 |
+74:45:23.9 |
HIP 89140 |
26.85 |
| 2026-06-07 00:00 |
18:14:41.85 |
+74:52:08.0 |
HIP 89228 |
20.33 |
| 2026-06-07 12:00 |
18:13:56.79 |
+74:58:47.9 |
HIP 89228 |
13.05 |
| 2026-06-08 00:00 |
18:13:10.63 |
+75:05:23.4 |
HIP 89228 |
5.82 |
| 2026-06-08 12:00 |
18:12:23.38 |
+75:11:54.4 |
HIP 89228 |
1.37 |
| 2026-06-09 00:00 |
18:11:35.02 |
+75:18:21.1 |
HIP 89228 |
8.51 |
| 2026-06-09 12:00 |
18:10:45.56 |
+75:24:43.2 |
HIP 89228 |
15.60 |
| 2026-06-10 00:00 |
18:09:54.98 |
+75:31:00.8 |
HIP 89228 |
22.65 |
| 2026-06-10 12:00 |
18:09:03.30 |
+75:37:13.8 |
HIP 88379 |
25.14 |
| 2026-06-11 00:00 |
18:08:10.49 |
+75:43:22.1 |
HIP 88379 |
20.07 |
| 2026-06-11 12:00 |
18:07:16.57 |
+75:49:25.7 |
HIP 88379 |
16.41 |
| 2026-06-12 00:00 |
18:06:21.53 |
+75:55:24.6 |
HIP 88658 |
12.55 |
| 2026-06-12 12:00 |
18:05:25.38 |
+76:01:18.7 |
HIP 88658 |
6.96 |
| 2026-06-13 00:00 |
18:04:28.11 |
+76:07:07.9 |
HIP 88658 |
5.70 |
| 2026-06-13 12:00 |
18:03:29.73 |
+76:12:52.2 |
HIP 88658 |
10.38 |
| 2026-06-14 00:00 |
18:02:30.24 |
+76:18:31.6 |
HIP 88658 |
16.50 |
| 2026-06-14 12:00 |
18:01:29.65 |
+76:24:06.0 |
HIP 88005 |
13.16 |
| 2026-06-15 00:00 |
18:00:27.96 |
+76:29:35.4 |
HIP 88005 |
7.09 |
| 2026-06-15 12:00 |
17:59:25.17 |
+76:34:59.7 |
HIP 88005 |
3.67 |
| 2026-06-16 00:00 |
17:58:21.31 |
+76:40:18.8 |
HIP 88005 |
7.79 |
| 2026-06-16 12:00 |
17:57:16.36 |
+76:45:32.8 |
HIP 88005 |
13.78 |
| 2026-06-17 00:00 |
17:56:10.36 |
+76:50:41.6 |
HIP 88005 |
19.99 |
| 2026-06-17 12:00 |
17:55:03.30 |
+76:55:45.2 |
HIP 87234 |
19.10 |
| 2026-06-18 00:00 |
17:53:55.19 |
+77:00:43.5 |
HIP 87234 |
15.39 |
| 2026-06-18 12:00 |
17:52:46.06 |
+77:05:36.4 |
HIP 87234 |
13.67 |
| 2026-06-19 00:00 |
17:51:35.91 |
+77:10:24.0 |
HIP 87541 |
13.54 |
| 2026-06-19 12:00 |
17:50:24.76 |
+77:15:06.3 |
HIP 87541 |
11.81 |
| 2026-06-20 00:00 |
17:49:12.62 |
+77:19:43.1 |
HIP 87541 |
13.09 |
| 2026-06-20 12:00 |
17:47:59.52 |
+77:24:14.4 |
HIP 87541 |
16.66 |
| 2026-06-21 00:00 |
17:46:45.47 |
+77:28:40.3 |
HIP 87541 |
21.35 |
| 2026-06-21 12:00 |
17:45:30.48 |
+77:33:00.7 |
HIP 87541 |
26.55 |
| 2026-06-22 00:00 |
17:44:14.59 |
+77:37:15.5 |
HIP 87541 |
31.98 |