메타데이터
| 항목 |
값 |
| Designation |
C/1992 W1 (Ohshita) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1992-11-01T14:50:48.024960Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:43Z |
| Obs used |
85 |
| NEO |
- |
| M1 |
12.300 |
| K1 |
20.750 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1992-12-18.0000000 |
| e |
0.99301266 |
| q (au) |
0.664826 |
| a (au) |
95.147254 |
| i (deg) |
115.137808 |
| Ω (om, deg) |
138.404186 |
| ω (w, deg) |
310.170779 |
| M (ma, deg) |
0.049255 |
밝기
산란 + 전체 선형
$$
M_a = (11.403 + 3.249\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.403 |
| n |
3.249 |
| gf |
0.999 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
2.347 |
| 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) |
| 2026-07-29 00:00 |
22:00:49.13 |
+45:39:46.9 |
HIP 108668 |
6.23 |
| 2026-07-29 12:00 |
22:00:46.41 |
+45:39:50.9 |
HIP 108668 |
6.36 |
| 2026-07-30 00:00 |
22:00:43.69 |
+45:39:54.5 |
HIP 108668 |
6.52 |
| 2026-07-30 12:00 |
22:00:40.96 |
+45:39:58.0 |
HIP 108668 |
6.71 |
| 2026-07-31 00:00 |
22:00:38.22 |
+45:40:01.2 |
HIP 108668 |
6.93 |
| 2026-07-31 12:00 |
22:00:35.46 |
+45:40:04.2 |
HIP 108668 |
7.17 |
| 2026-08-01 00:00 |
22:00:32.70 |
+45:40:06.9 |
HIP 108668 |
7.43 |
| 2026-08-01 12:00 |
22:00:29.94 |
+45:40:09.4 |
HIP 108668 |
7.71 |
| 2026-08-02 00:00 |
22:00:27.16 |
+45:40:11.7 |
HIP 108668 |
8.00 |
| 2026-08-02 12:00 |
22:00:24.37 |
+45:40:13.7 |
HIP 108668 |
8.31 |
| 2026-08-03 00:00 |
22:00:21.58 |
+45:40:15.5 |
HIP 108668 |
8.64 |
| 2026-08-03 12:00 |
22:00:18.78 |
+45:40:17.0 |
HIP 108668 |
8.98 |
| 2026-08-04 00:00 |
22:00:15.97 |
+45:40:18.3 |
HIP 108668 |
9.33 |
| 2026-08-04 12:00 |
22:00:13.15 |
+45:40:19.3 |
HIP 108668 |
9.69 |
| 2026-08-05 00:00 |
22:00:10.33 |
+45:40:20.1 |
HIP 108668 |
10.06 |
| 2026-08-05 12:00 |
22:00:07.50 |
+45:40:20.7 |
HIP 108668 |
10.44 |
| 2026-08-06 00:00 |
22:00:04.66 |
+45:40:21.0 |
HIP 108668 |
10.83 |
| 2026-08-06 12:00 |
22:00:01.82 |
+45:40:21.1 |
HIP 108668 |
11.22 |
| 2026-08-07 00:00 |
21:59:58.97 |
+45:40:20.9 |
HIP 108668 |
11.62 |
| 2026-08-07 12:00 |
21:59:56.11 |
+45:40:20.5 |
HIP 108521 |
11.66 |
| 2026-08-08 00:00 |
21:59:53.25 |
+45:40:19.9 |
HIP 108521 |
11.28 |
| 2026-08-08 12:00 |
21:59:50.38 |
+45:40:19.0 |
HIP 108521 |
10.91 |
| 2026-08-09 00:00 |
21:59:47.51 |
+45:40:17.8 |
HIP 108521 |
10.55 |
| 2026-08-09 12:00 |
21:59:44.63 |
+45:40:16.5 |
HIP 108521 |
10.20 |
| 2026-08-10 00:00 |
21:59:41.75 |
+45:40:14.8 |
HIP 108521 |
9.86 |
| 2026-08-10 12:00 |
21:59:38.86 |
+45:40:12.9 |
HIP 108521 |
9.53 |
| 2026-08-11 00:00 |
21:59:35.97 |
+45:40:10.8 |
HIP 108521 |
9.21 |
| 2026-08-11 12:00 |
21:59:33.07 |
+45:40:08.5 |
HIP 108521 |
8.90 |
| 2026-08-12 00:00 |
21:59:30.17 |
+45:40:05.8 |
HIP 108521 |
8.61 |
| 2026-08-12 12:00 |
21:59:27.26 |
+45:40:03.0 |
HIP 108521 |
8.34 |
| 2026-08-13 00:00 |
21:59:24.35 |
+45:39:59.9 |
HIP 108521 |
8.08 |
| 2026-08-13 12:00 |
21:59:21.44 |
+45:39:56.5 |
HIP 108521 |
7.85 |
| 2026-08-14 00:00 |
21:59:18.52 |
+45:39:52.9 |
HIP 108521 |
7.64 |
| 2026-08-14 12:00 |
21:59:15.60 |
+45:39:49.1 |
HIP 108521 |
7.46 |
| 2026-08-15 00:00 |
21:59:12.68 |
+45:39:45.0 |
HIP 108521 |
7.30 |
| 2026-08-15 12:00 |
21:59:09.75 |
+45:39:40.7 |
HIP 108521 |
7.17 |
| 2026-08-16 00:00 |
21:59:06.83 |
+45:39:36.1 |
HIP 108521 |
7.07 |
| 2026-08-16 12:00 |
21:59:03.90 |
+45:39:31.3 |
HIP 108521 |
7.01 |
| 2026-08-17 00:00 |
21:59:00.97 |
+45:39:26.2 |
HIP 108521 |
6.98 |
| 2026-08-17 12:00 |
21:58:58.04 |
+45:39:20.9 |
HIP 108521 |
6.98 |
| 2026-08-18 00:00 |
21:58:55.10 |
+45:39:15.4 |
HIP 108521 |
7.02 |
| 2026-08-18 12:00 |
21:58:52.17 |
+45:39:09.6 |
HIP 108521 |
7.10 |
| 2026-08-19 00:00 |
21:58:49.23 |
+45:39:03.5 |
HIP 108521 |
7.21 |