메타데이터
| 항목 |
값 |
| Designation |
C/1915 C1 (Mellish) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1915-07-17T15:36:50.613120Z |
| Orbit solution date (soln_date, UTC) |
2024-04-15T15:43:28Z |
| Obs used |
94 |
| NEO |
- |
| M1 |
7.700 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1915-06-30.0000000 |
| e |
1.00027442 |
| q (au) |
1.005324 |
| a (au) |
-3663.395604 |
| i (deg) |
54.791644 |
| Ω (om, deg) |
73.453125 |
| ω (w, deg) |
247.782134 |
| M (ma, deg) |
-0.000078 |
밝기
산란 + 전체 선형
$$
M_a = (9.514 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.514 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.852 |
| k |
0.800 |
| 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) |
| 2026-06-01 00:00 |
08:54:02.29 |
+63:10:33.9 |
HIP 43793 |
19.08 |
| 2026-06-01 12:00 |
08:54:03.25 |
+63:10:24.1 |
HIP 43793 |
19.19 |
| 2026-06-02 00:00 |
08:54:04.23 |
+63:10:14.3 |
HIP 43793 |
19.29 |
| 2026-06-02 12:00 |
08:54:05.22 |
+63:10:04.5 |
HIP 43793 |
19.40 |
| 2026-06-03 00:00 |
08:54:06.23 |
+63:09:54.8 |
HIP 43793 |
19.52 |
| 2026-06-03 12:00 |
08:54:07.25 |
+63:09:45.1 |
HIP 43793 |
19.63 |
| 2026-06-04 00:00 |
08:54:08.28 |
+63:09:35.4 |
HIP 43793 |
19.74 |
| 2026-06-04 12:00 |
08:54:09.33 |
+63:09:25.7 |
HIP 43793 |
19.85 |
| 2026-06-05 00:00 |
08:54:10.39 |
+63:09:16.0 |
HIP 43793 |
19.96 |
| 2026-06-05 12:00 |
08:54:11.46 |
+63:09:06.4 |
HIP 43793 |
20.07 |
| 2026-06-06 00:00 |
08:54:12.55 |
+63:08:56.8 |
HIP 43793 |
20.19 |
| 2026-06-06 12:00 |
08:54:13.65 |
+63:08:47.2 |
HIP 43793 |
20.30 |
| 2026-06-07 00:00 |
08:54:14.76 |
+63:08:37.7 |
HIP 43793 |
20.41 |
| 2026-06-07 12:00 |
08:54:15.89 |
+63:08:28.2 |
HIP 43793 |
20.53 |
| 2026-06-08 00:00 |
08:54:17.03 |
+63:08:18.7 |
HIP 43793 |
20.64 |
| 2026-06-08 12:00 |
08:54:18.18 |
+63:08:09.3 |
HIP 43793 |
20.76 |
| 2026-06-09 00:00 |
08:54:19.35 |
+63:07:59.8 |
HIP 43793 |
20.87 |
| 2026-06-09 12:00 |
08:54:20.53 |
+63:07:50.4 |
HIP 43793 |
20.99 |
| 2026-06-10 00:00 |
08:54:21.72 |
+63:07:41.1 |
HIP 43793 |
21.11 |
| 2026-06-10 12:00 |
08:54:22.92 |
+63:07:31.8 |
HIP 43793 |
21.22 |
| 2026-06-11 00:00 |
08:54:24.14 |
+63:07:22.5 |
HIP 43793 |
21.34 |
| 2026-06-11 12:00 |
08:54:25.37 |
+63:07:13.2 |
HIP 43793 |
21.46 |
| 2026-06-12 00:00 |
08:54:26.62 |
+63:07:04.0 |
HIP 43793 |
21.58 |
| 2026-06-12 12:00 |
08:54:27.87 |
+63:06:54.8 |
HIP 43793 |
21.70 |
| 2026-06-13 00:00 |
08:54:29.14 |
+63:06:45.7 |
HIP 43793 |
21.82 |
| 2026-06-13 12:00 |
08:54:30.42 |
+63:06:36.5 |
HIP 43793 |
21.94 |
| 2026-06-14 00:00 |
08:54:31.71 |
+63:06:27.5 |
HIP 43793 |
22.06 |
| 2026-06-14 12:00 |
08:54:33.01 |
+63:06:18.4 |
HIP 43793 |
22.18 |
| 2026-06-15 00:00 |
08:54:34.33 |
+63:06:09.4 |
HIP 43793 |
22.30 |
| 2026-06-15 12:00 |
08:54:35.66 |
+63:06:00.5 |
HIP 43793 |
22.42 |
| 2026-06-16 00:00 |
08:54:37.00 |
+63:05:51.6 |
HIP 43793 |
22.54 |
| 2026-06-16 12:00 |
08:54:38.35 |
+63:05:42.7 |
HIP 43793 |
22.67 |
| 2026-06-17 00:00 |
08:54:39.71 |
+63:05:33.8 |
HIP 43793 |
22.79 |
| 2026-06-17 12:00 |
08:54:41.09 |
+63:05:25.0 |
HIP 43793 |
22.91 |
| 2026-06-18 00:00 |
08:54:42.47 |
+63:05:16.3 |
HIP 43793 |
23.04 |
| 2026-06-18 12:00 |
08:54:43.87 |
+63:05:07.6 |
HIP 43793 |
23.16 |
| 2026-06-19 00:00 |
08:54:45.28 |
+63:04:58.9 |
HIP 43793 |
23.29 |
| 2026-06-19 12:00 |
08:54:46.70 |
+63:04:50.3 |
HIP 43793 |
23.41 |
| 2026-06-20 00:00 |
08:54:48.13 |
+63:04:41.7 |
HIP 43793 |
23.54 |
| 2026-06-20 12:00 |
08:54:49.57 |
+63:04:33.2 |
HIP 43793 |
23.66 |
| 2026-06-21 00:00 |
08:54:51.02 |
+63:04:24.7 |
HIP 43793 |
23.79 |
| 2026-06-21 12:00 |
08:54:52.48 |
+63:04:16.3 |
HIP 43793 |
23.92 |
| 2026-06-22 00:00 |
08:54:53.96 |
+63:04:07.9 |
HIP 43793 |
24.04 |