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 |
-0.864 |
| 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) |
| 2026-05-12 00:00 |
03:40:06.48 |
+56:53:26.2 |
HIP 16974 |
14.79 |
| 2026-05-12 12:00 |
03:40:08.29 |
+56:53:27.6 |
HIP 16974 |
15.03 |
| 2026-05-13 00:00 |
03:40:10.10 |
+56:53:29.1 |
HIP 16974 |
15.27 |
| 2026-05-13 12:00 |
03:40:11.91 |
+56:53:30.7 |
HIP 16974 |
15.51 |
| 2026-05-14 00:00 |
03:40:13.72 |
+56:53:32.4 |
HIP 16974 |
15.75 |
| 2026-05-14 12:00 |
03:40:15.54 |
+56:53:34.1 |
HIP 16974 |
15.99 |
| 2026-05-15 00:00 |
03:40:17.35 |
+56:53:35.9 |
HIP 16974 |
16.23 |
| 2026-05-15 12:00 |
03:40:19.17 |
+56:53:37.8 |
HIP 16974 |
16.47 |
| 2026-05-16 00:00 |
03:40:20.98 |
+56:53:39.8 |
HIP 16974 |
16.71 |
| 2026-05-16 12:00 |
03:40:22.80 |
+56:53:41.8 |
HIP 16974 |
16.95 |
| 2026-05-17 00:00 |
03:40:24.62 |
+56:53:43.9 |
HIP 16974 |
17.19 |
| 2026-05-17 12:00 |
03:40:26.44 |
+56:53:46.1 |
HIP 16974 |
17.44 |
| 2026-05-18 00:00 |
03:40:28.26 |
+56:53:48.4 |
HIP 16974 |
17.68 |
| 2026-05-18 12:00 |
03:40:30.08 |
+56:53:50.8 |
HIP 16974 |
17.92 |
| 2026-05-19 00:00 |
03:40:31.90 |
+56:53:53.2 |
HIP 16974 |
18.16 |
| 2026-05-19 12:00 |
03:40:33.72 |
+56:53:55.8 |
HIP 16974 |
18.40 |
| 2026-05-20 00:00 |
03:40:35.54 |
+56:53:58.4 |
HIP 16974 |
18.64 |
| 2026-05-20 12:00 |
03:40:37.36 |
+56:54:01.0 |
HIP 16974 |
18.89 |
| 2026-05-21 00:00 |
03:40:39.17 |
+56:54:03.8 |
HIP 16974 |
19.13 |
| 2026-05-21 12:00 |
03:40:40.99 |
+56:54:06.6 |
HIP 16974 |
19.37 |
| 2026-05-22 00:00 |
03:40:42.81 |
+56:54:09.5 |
HIP 16974 |
19.61 |
| 2026-05-22 12:00 |
03:40:44.62 |
+56:54:12.5 |
HIP 16974 |
19.85 |
| 2026-05-23 00:00 |
03:40:46.44 |
+56:54:15.6 |
HIP 16974 |
20.10 |
| 2026-05-23 12:00 |
03:40:48.25 |
+56:54:18.7 |
HIP 16974 |
20.34 |
| 2026-05-24 00:00 |
03:40:50.06 |
+56:54:21.9 |
HIP 16974 |
20.58 |
| 2026-05-24 12:00 |
03:40:51.87 |
+56:54:25.2 |
HIP 16974 |
20.82 |
| 2026-05-25 00:00 |
03:40:53.68 |
+56:54:28.6 |
HIP 16974 |
21.06 |
| 2026-05-25 12:00 |
03:40:55.49 |
+56:54:32.0 |
HIP 16974 |
21.31 |
| 2026-05-26 00:00 |
03:40:57.30 |
+56:54:35.5 |
HIP 16974 |
21.55 |
| 2026-05-26 12:00 |
03:40:59.10 |
+56:54:39.1 |
HIP 16974 |
21.79 |
| 2026-05-27 00:00 |
03:41:00.90 |
+56:54:42.8 |
HIP 16974 |
22.03 |
| 2026-05-27 12:00 |
03:41:02.70 |
+56:54:46.5 |
HIP 16974 |
22.27 |
| 2026-05-28 00:00 |
03:41:04.50 |
+56:54:50.3 |
HIP 16974 |
22.51 |
| 2026-05-28 12:00 |
03:41:06.30 |
+56:54:54.2 |
HIP 16974 |
22.75 |
| 2026-05-29 00:00 |
03:41:08.09 |
+56:54:58.1 |
HIP 16974 |
23.00 |
| 2026-05-29 12:00 |
03:41:09.88 |
+56:55:02.1 |
HIP 16974 |
23.24 |
| 2026-05-30 00:00 |
03:41:11.67 |
+56:55:06.2 |
HIP 16974 |
23.48 |
| 2026-05-30 12:00 |
03:41:13.45 |
+56:55:10.4 |
HIP 16974 |
23.72 |
| 2026-05-31 00:00 |
03:41:15.23 |
+56:55:14.6 |
HIP 16974 |
23.96 |
| 2026-05-31 12:00 |
03:41:17.01 |
+56:55:18.9 |
HIP 16974 |
24.20 |
| 2026-06-01 00:00 |
03:41:18.79 |
+56:55:23.3 |
HIP 16974 |
24.44 |
| 2026-06-01 12:00 |
03:41:20.56 |
+56:55:27.8 |
HIP 16974 |
24.68 |
| 2026-06-02 00:00 |
03:41:22.33 |
+56:55:32.3 |
HIP 16974 |
24.92 |