메타데이터
| 항목 |
값 |
| Designation |
C/1932 M2 (Geddes) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1932-09-20T21:14:07.022400Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:05Z |
| Obs used |
15 |
| NEO |
- |
| M1 |
6.100 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1933-04-05.0000000 |
| e |
0.99929446 |
| q (au) |
2.312627 |
| a (au) |
3277.828381 |
| i (deg) |
124.976898 |
| Ω (om, deg) |
216.080116 |
| ω (w, deg) |
329.630678 |
| M (ma, deg) |
0.001030 |
밝기
산란 + 전체 선형
$$
M_a = (3.349 + 3.145\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
3.349 |
| n |
3.145 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
03:43:53.72 |
+57:09:55.8 |
HIP 17361 |
25.06 |
| 2026-07-29 12:00 |
03:43:54.39 |
+57:10:05.2 |
HIP 17361 |
24.94 |
| 2026-07-30 00:00 |
03:43:55.05 |
+57:10:14.7 |
HIP 17361 |
24.81 |
| 2026-07-30 12:00 |
03:43:55.70 |
+57:10:24.1 |
HIP 17361 |
24.69 |
| 2026-07-31 00:00 |
03:43:56.33 |
+57:10:33.6 |
HIP 17361 |
24.56 |
| 2026-07-31 12:00 |
03:43:56.94 |
+57:10:43.1 |
HIP 17361 |
24.44 |
| 2026-08-01 00:00 |
03:43:57.55 |
+57:10:52.6 |
HIP 17361 |
24.32 |
| 2026-08-01 12:00 |
03:43:58.13 |
+57:11:02.1 |
HIP 17361 |
24.19 |
| 2026-08-02 00:00 |
03:43:58.71 |
+57:11:11.6 |
HIP 17361 |
24.07 |
| 2026-08-02 12:00 |
03:43:59.26 |
+57:11:21.1 |
HIP 17361 |
23.94 |
| 2026-08-03 00:00 |
03:43:59.81 |
+57:11:30.6 |
HIP 17361 |
23.82 |
| 2026-08-03 12:00 |
03:44:00.34 |
+57:11:40.1 |
HIP 17361 |
23.69 |
| 2026-08-04 00:00 |
03:44:00.85 |
+57:11:49.6 |
HIP 17361 |
23.57 |
| 2026-08-04 12:00 |
03:44:01.35 |
+57:11:59.1 |
HIP 17361 |
23.44 |
| 2026-08-05 00:00 |
03:44:01.83 |
+57:12:08.6 |
HIP 17361 |
23.32 |
| 2026-08-05 12:00 |
03:44:02.30 |
+57:12:18.1 |
HIP 17361 |
23.19 |
| 2026-08-06 00:00 |
03:44:02.76 |
+57:12:27.6 |
HIP 17361 |
23.06 |
| 2026-08-06 12:00 |
03:44:03.20 |
+57:12:37.2 |
HIP 17361 |
22.94 |
| 2026-08-07 00:00 |
03:44:03.62 |
+57:12:46.7 |
HIP 17361 |
22.81 |
| 2026-08-07 12:00 |
03:44:04.03 |
+57:12:56.2 |
HIP 17361 |
22.69 |
| 2026-08-08 00:00 |
03:44:04.43 |
+57:13:05.7 |
HIP 17361 |
22.56 |
| 2026-08-08 12:00 |
03:44:04.80 |
+57:13:15.2 |
HIP 17361 |
22.43 |
| 2026-08-09 00:00 |
03:44:05.17 |
+57:13:24.7 |
HIP 17361 |
22.31 |
| 2026-08-09 12:00 |
03:44:05.52 |
+57:13:34.2 |
HIP 17361 |
22.18 |
| 2026-08-10 00:00 |
03:44:05.85 |
+57:13:43.7 |
HIP 17361 |
22.05 |
| 2026-08-10 12:00 |
03:44:06.17 |
+57:13:53.2 |
HIP 17361 |
21.92 |
| 2026-08-11 00:00 |
03:44:06.47 |
+57:14:02.7 |
HIP 17361 |
21.80 |
| 2026-08-11 12:00 |
03:44:06.75 |
+57:14:12.1 |
HIP 17361 |
21.67 |
| 2026-08-12 00:00 |
03:44:07.02 |
+57:14:21.6 |
HIP 17361 |
21.54 |
| 2026-08-12 12:00 |
03:44:07.28 |
+57:14:31.1 |
HIP 17361 |
21.41 |
| 2026-08-13 00:00 |
03:44:07.52 |
+57:14:40.5 |
HIP 17361 |
21.28 |
| 2026-08-13 12:00 |
03:44:07.74 |
+57:14:49.9 |
HIP 17361 |
21.15 |
| 2026-08-14 00:00 |
03:44:07.95 |
+57:14:59.4 |
HIP 17361 |
21.02 |
| 2026-08-14 12:00 |
03:44:08.14 |
+57:15:08.8 |
HIP 17361 |
20.89 |
| 2026-08-15 00:00 |
03:44:08.32 |
+57:15:18.2 |
HIP 17361 |
20.76 |
| 2026-08-15 12:00 |
03:44:08.48 |
+57:15:27.6 |
HIP 17361 |
20.63 |
| 2026-08-16 00:00 |
03:44:08.63 |
+57:15:36.9 |
HIP 17361 |
20.50 |
| 2026-08-16 12:00 |
03:44:08.76 |
+57:15:46.3 |
HIP 17361 |
20.37 |
| 2026-08-17 00:00 |
03:44:08.87 |
+57:15:55.6 |
HIP 17361 |
20.24 |
| 2026-08-17 12:00 |
03:44:08.97 |
+57:16:05.0 |
HIP 17361 |
20.10 |
| 2026-08-18 00:00 |
03:44:09.05 |
+57:16:14.3 |
HIP 17361 |
19.97 |
| 2026-08-18 12:00 |
03:44:09.12 |
+57:16:23.6 |
HIP 17361 |
19.84 |
| 2026-08-19 00:00 |
03:44:09.17 |
+57:16:32.8 |
HIP 17361 |
19.71 |