메타데이터
| 항목 |
값 |
| Designation |
C/2026 B2 (Sun-Gao) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2026-01-10T02:50:33.423360Z |
| Orbit solution date (soln_date, UTC) |
2026-04-21T11:12:17Z |
| Obs used |
185 |
| NEO |
- |
| M1 |
13.200 |
| K1 |
10.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2026-01-19T00:03:36.864000Z |
| Discovery magnitude (MPC) |
15.50 G |
| Discovery observatory (MPC) |
N86 · Xingming Observatory-KATS, Nanshan |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2026-02-11.0000000 |
| e |
0.99754914 |
| q (au) |
1.284251 |
| a (au) |
523.999832 |
| i (deg) |
59.578829 |
| Ω (om, deg) |
234.638503 |
| ω (w, deg) |
47.299179 |
| M (ma, deg) |
0.002620 |
밝기
산란 + 전체 선형
$$
M_a = (12.271 + 3.947\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.271 |
| n |
3.947 |
| gf |
1.000 |
| gb |
-0.998 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
01:05:55.31 |
+40:58:16.1 |
HIP 5276 |
24.65 |
| 2026-05-12 12:00 |
01:07:03.64 |
+41:01:37.5 |
HIP 5276 |
14.69 |
| 2026-05-13 00:00 |
01:08:11.66 |
+41:04:57.1 |
HIP 5276 |
13.33 |
| 2026-05-13 12:00 |
01:09:19.38 |
+41:08:15.1 |
HIP 5486 |
15.81 |
| 2026-05-14 00:00 |
01:10:26.80 |
+41:11:31.2 |
HIP 5553 |
9.16 |
| 2026-05-14 12:00 |
01:11:33.91 |
+41:14:45.7 |
HIP 5553 |
3.93 |
| 2026-05-15 00:00 |
01:12:40.72 |
+41:17:58.5 |
HIP 5637 |
3.07 |
| 2026-05-15 12:00 |
01:13:47.23 |
+41:21:09.7 |
HIP 5698 |
8.59 |
| 2026-05-16 00:00 |
01:14:53.44 |
+41:24:19.1 |
HIP 5698 |
20.17 |
| 2026-05-16 12:00 |
01:15:59.34 |
+41:27:27.0 |
HIP 5698 |
32.62 |
| 2026-05-17 00:00 |
01:17:04.95 |
+41:30:33.2 |
HIP 6059 |
30.71 |
| 2026-05-17 12:00 |
01:18:10.25 |
+41:33:37.9 |
HIP 6241 |
32.60 |
| 2026-05-18 00:00 |
01:19:15.24 |
+41:36:40.9 |
HIP 6241 |
23.46 |
| 2026-05-18 12:00 |
01:20:19.94 |
+41:39:42.4 |
HIP 6241 |
18.74 |
| 2026-05-19 00:00 |
01:21:24.33 |
+41:42:42.3 |
HIP 6241 |
21.45 |
| 2026-05-19 12:00 |
01:22:28.42 |
+41:45:40.7 |
HIP 6438 |
18.76 |
| 2026-05-20 00:00 |
01:23:32.21 |
+41:48:37.5 |
HIP 6438 |
18.24 |
| 2026-05-20 12:00 |
01:24:35.70 |
+41:51:32.9 |
HIP 6438 |
24.70 |
| 2026-05-21 00:00 |
01:25:38.89 |
+41:54:26.7 |
HIP 6709 |
25.23 |
| 2026-05-21 12:00 |
01:26:41.78 |
+41:57:19.1 |
HIP 6709 |
21.85 |
| 2026-05-22 00:00 |
01:27:44.37 |
+42:00:10.0 |
HIP 6878 |
18.41 |
| 2026-05-22 12:00 |
01:28:46.65 |
+42:02:59.4 |
HIP 6878 |
13.28 |
| 2026-05-23 00:00 |
01:29:48.64 |
+42:05:47.4 |
HIP 6943 |
11.87 |
| 2026-05-23 12:00 |
01:30:50.33 |
+42:08:34.0 |
HIP 6943 |
17.65 |
| 2026-05-24 00:00 |
01:31:51.72 |
+42:11:19.2 |
HIP 7252 |
19.37 |
| 2026-05-24 12:00 |
01:32:52.81 |
+42:14:03.0 |
HIP 7252 |
8.34 |
| 2026-05-25 00:00 |
01:33:53.60 |
+42:16:45.4 |
HIP 7252 |
5.84 |
| 2026-05-25 12:00 |
01:34:54.10 |
+42:19:26.5 |
HIP 7252 |
16.25 |
| 2026-05-26 00:00 |
01:35:54.29 |
+42:22:06.2 |
HIP 7420 |
19.99 |
| 2026-05-26 12:00 |
01:36:54.19 |
+42:24:44.6 |
HIP 7420 |
26.50 |
| 2026-05-27 00:00 |
01:37:53.80 |
+42:27:21.7 |
HIP 7737 |
25.72 |
| 2026-05-27 12:00 |
01:38:53.11 |
+42:29:57.5 |
HIP 7737 |
16.65 |
| 2026-05-28 00:00 |
01:39:52.12 |
+42:32:32.0 |
HIP 7737 |
12.04 |
| 2026-05-28 12:00 |
01:40:50.83 |
+42:35:05.2 |
HIP 7918 |
10.39 |
| 2026-05-29 00:00 |
01:41:49.26 |
+42:37:37.2 |
HIP 7918 |
0.94 |
| 2026-05-29 12:00 |
01:42:47.38 |
+42:40:08.0 |
HIP 8003 |
2.20 |
| 2026-05-30 00:00 |
01:43:45.21 |
+42:42:37.5 |
HIP 8003 |
11.04 |
| 2026-05-30 12:00 |
01:44:42.75 |
+42:45:05.8 |
HIP 8003 |
21.78 |
| 2026-05-31 00:00 |
01:45:40.00 |
+42:47:32.9 |
HIP 8332 |
26.14 |
| 2026-05-31 12:00 |
01:46:36.95 |
+42:49:58.8 |
HIP 8332 |
17.46 |
| 2026-06-01 00:00 |
01:47:33.60 |
+42:52:23.6 |
HIP 8332 |
12.49 |
| 2026-06-01 12:00 |
01:48:29.96 |
+42:54:47.2 |
HIP 8332 |
15.25 |
| 2026-06-02 00:00 |
01:49:26.03 |
+42:57:09.6 |
HIP 8378 |
22.32 |