C/2026 B2 (Sun-Gao)
메타데이터
| 항목 | 값 |
|---|---|
| Designation | C/2026 B2 (Sun-Gao) |
| Type | C |
| Perihelion (tp_cal, UTC) | 2026-01-10T03:02:20.037120Z |
| Orbit solution date (soln_date, UTC) | 2026-03-31T09:42:30Z |
| Obs used | 177 |
| NEO | - |
| M1 | 14.000 |
| K1 | 4.500 |
| 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) | 2026-02-09.0000000 |
| e | 0.99795008 |
| q (au) | 1.284352 |
| a (au) | 626.536734 |
| i (deg) | 59.577416 |
| Ω (om, deg) | 234.639325 |
| ω (w, deg) | 47.306465 |
| M (ma, deg) | 0.001877 |
밝기
산란 + 전체 선형
$$ M_a = (12.863 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$
모델 상수
| 항목 | 값 |
|---|---|
| H0 | 12.863 |
| n | 2.000 |
| gf | 1.000 |
| gb | -0.513 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) | 끝 (UTC) | a | b |
|---|---|---|---|
| 2026-01-19 | 2026-03-18 | -7.6998 | +0.483 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
찾아보기
천체력
| Date/Time (UTC) | RA (J2000) | Dec (J2000) | Nearest HIP | Dist from HIP (arcmin) |
|---|---|---|---|---|
| 2026-03-26 00:00 | 22:55:29.80 | +32:28:52.1 | HIP 113342 | 28.01 |
| 2026-03-26 12:00 | 22:57:07.71 | +32:37:03.6 | HIP 113342 | 25.16 |
| 2026-03-27 00:00 | 22:58:45.32 | +32:45:10.4 | HIP 113633 | 29.69 |
| 2026-03-27 12:00 | 23:00:22.63 | +32:53:12.6 | HIP 113618 | 20.98 |
| 2026-03-28 00:00 | 23:01:59.64 | +33:01:10.3 | HIP 113728 | 19.57 |
| 2026-03-28 12:00 | 23:03:36.34 | +33:09:03.4 | HIP 113985 | 22.63 |
| 2026-03-29 00:00 | 23:05:12.74 | +33:16:52.1 | HIP 113985 | 6.73 |
| 2026-03-29 12:00 | 23:06:48.83 | +33:24:36.3 | HIP 114116 | 22.52 |
| 2026-03-30 00:00 | 23:08:24.61 | +33:32:16.1 | HIP 114404 | 25.71 |
| 2026-03-30 12:00 | 23:10:00.09 | +33:39:51.5 | HIP 114404 | 6.48 |
| 2026-03-31 00:00 | 23:11:35.25 | +33:47:22.5 | HIP 114498 | 4.79 |
| 2026-03-31 12:00 | 23:13:10.11 | +33:54:49.2 | HIP 114663 | 21.85 |
| 2026-04-01 00:00 | 23:14:44.65 | +34:02:11.6 | HIP 114663 | 19.10 |
| 2026-04-01 12:00 | 23:16:18.89 | +34:09:29.8 | HIP 114915 | 16.63 |
| 2026-04-02 00:00 | 23:17:52.81 | +34:16:43.8 | HIP 115017 | 14.12 |
| 2026-04-02 12:00 | 23:19:26.42 | +34:23:53.6 | HIP 115148 | 23.70 |
| 2026-04-03 00:00 | 23:20:59.72 | +34:30:59.2 | HIP 115357 | 14.36 |
| 2026-04-03 12:00 | 23:22:32.70 | +34:38:00.8 | HIP 115357 | 7.46 |
| 2026-04-04 00:00 | 23:24:05.37 | +34:44:58.3 | HIP 115471 | 26.94 |
| 2026-04-04 12:00 | 23:25:37.73 | +34:51:51.7 | HIP 115539 | 32.73 |
| 2026-04-05 00:00 | 23:27:09.77 | +34:58:41.2 | HIP 115807 | 33.36 |
| 2026-04-05 12:00 | 23:28:41.49 | +35:05:26.7 | HIP 115979 | 15.28 |
| 2026-04-06 00:00 | 23:30:12.90 | +35:12:08.3 | HIP 115979 | 12.03 |
| 2026-04-06 12:00 | 23:31:43.99 | +35:18:46.1 | HIP 116174 | 7.92 |
| 2026-04-07 00:00 | 23:33:14.76 | +35:25:20.0 | HIP 116238 | 7.77 |
| 2026-04-07 12:00 | 23:34:45.22 | +35:31:50.0 | HIP 116238 | 19.41 |
| 2026-04-08 00:00 | 23:36:15.36 | +35:38:16.4 | HIP 116534 | 13.66 |
| 2026-04-08 12:00 | 23:37:45.18 | +35:44:38.9 | HIP 116579 | 5.48 |
| 2026-04-09 00:00 | 23:39:14.68 | +35:50:57.8 | HIP 116681 | 7.56 |
| 2026-04-09 12:00 | 23:40:43.86 | +35:57:13.1 | HIP 116842 | 3.54 |
| 2026-04-10 00:00 | 23:42:12.72 | +36:03:24.7 | HIP 116842 | 15.47 |
| 2026-04-10 12:00 | 23:43:41.27 | +36:09:32.7 | HIP 117094 | 12.92 |
| 2026-04-11 00:00 | 23:45:09.49 | +36:15:37.2 | HIP 117132 | 6.06 |
| 2026-04-11 12:00 | 23:46:37.40 | +36:21:38.1 | HIP 117197 | 11.59 |
| 2026-04-12 00:00 | 23:48:04.98 | +36:27:35.6 | HIP 117426 | 12.69 |
| 2026-04-12 12:00 | 23:49:32.24 | +36:33:29.6 | HIP 117503 | 8.16 |
| 2026-04-13 00:00 | 23:50:59.19 | +36:39:20.3 | HIP 117503 | 20.92 |
| 2026-04-13 12:00 | 23:52:25.81 | +36:45:07.5 | HIP 117762 | 13.59 |
| 2026-04-14 00:00 | 23:53:52.11 | +36:50:51.4 | HIP 117762 | 12.87 |
| 2026-04-14 12:00 | 23:55:18.09 | +36:56:32.0 | HIP 117762 | 28.33 |
| 2026-04-15 00:00 | 23:56:43.74 | +37:02:09.3 | HIP 117890 | 40.64 |
| 2026-04-15 12:00 | 23:58:09.08 | +37:07:43.4 | HIP 70 | 38.21 |
| 2026-04-16 00:00 | 23:59:34.09 | +37:13:14.3 | HIP 71 | 30.44 |