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) |
| 2026-09-20 00:00 |
03:43:39.69 |
+57:25:18.1 |
HIP 17361 |
10.13 |
| 2026-09-20 12:00 |
03:43:38.73 |
+57:25:24.8 |
HIP 17361 |
9.96 |
| 2026-09-21 00:00 |
03:43:37.76 |
+57:25:31.5 |
HIP 17361 |
9.80 |
| 2026-09-21 12:00 |
03:43:36.78 |
+57:25:38.0 |
HIP 17361 |
9.64 |
| 2026-09-22 00:00 |
03:43:35.78 |
+57:25:44.5 |
HIP 17361 |
9.48 |
| 2026-09-22 12:00 |
03:43:34.76 |
+57:25:50.9 |
HIP 17361 |
9.32 |
| 2026-09-23 00:00 |
03:43:33.74 |
+57:25:57.3 |
HIP 17361 |
9.16 |
| 2026-09-23 12:00 |
03:43:32.69 |
+57:26:03.6 |
HIP 17361 |
9.00 |
| 2026-09-24 00:00 |
03:43:31.64 |
+57:26:09.9 |
HIP 17361 |
8.84 |
| 2026-09-24 12:00 |
03:43:30.57 |
+57:26:16.1 |
HIP 17361 |
8.68 |
| 2026-09-25 00:00 |
03:43:29.49 |
+57:26:22.2 |
HIP 17361 |
8.52 |
| 2026-09-25 12:00 |
03:43:28.39 |
+57:26:28.2 |
HIP 17361 |
8.36 |
| 2026-09-26 00:00 |
03:43:27.28 |
+57:26:34.2 |
HIP 17361 |
8.21 |
| 2026-09-26 12:00 |
03:43:26.15 |
+57:26:40.1 |
HIP 17361 |
8.05 |
| 2026-09-27 00:00 |
03:43:25.02 |
+57:26:46.0 |
HIP 17361 |
7.90 |
| 2026-09-27 12:00 |
03:43:23.87 |
+57:26:51.8 |
HIP 17361 |
7.75 |
| 2026-09-28 00:00 |
03:43:22.70 |
+57:26:57.5 |
HIP 17361 |
7.60 |
| 2026-09-28 12:00 |
03:43:21.53 |
+57:27:03.2 |
HIP 17361 |
7.45 |
| 2026-09-29 00:00 |
03:43:20.33 |
+57:27:08.7 |
HIP 17361 |
7.30 |
| 2026-09-29 12:00 |
03:43:19.13 |
+57:27:14.3 |
HIP 17361 |
7.16 |
| 2026-09-30 00:00 |
03:43:17.91 |
+57:27:19.7 |
HIP 17361 |
7.02 |
| 2026-09-30 12:00 |
03:43:16.68 |
+57:27:25.1 |
HIP 17361 |
6.88 |
| 2026-10-01 00:00 |
03:43:15.44 |
+57:27:30.4 |
HIP 17361 |
6.74 |
| 2026-10-01 12:00 |
03:43:14.19 |
+57:27:35.6 |
HIP 17361 |
6.61 |
| 2026-10-02 00:00 |
03:43:12.92 |
+57:27:40.8 |
HIP 17361 |
6.48 |
| 2026-10-02 12:00 |
03:43:11.64 |
+57:27:45.9 |
HIP 17361 |
6.36 |
| 2026-10-03 00:00 |
03:43:10.34 |
+57:27:50.9 |
HIP 17361 |
6.23 |
| 2026-10-03 12:00 |
03:43:09.04 |
+57:27:55.8 |
HIP 17361 |
6.12 |
| 2026-10-04 00:00 |
03:43:07.72 |
+57:28:00.7 |
HIP 17361 |
6.01 |
| 2026-10-04 12:00 |
03:43:06.39 |
+57:28:05.5 |
HIP 17361 |
5.90 |
| 2026-10-05 00:00 |
03:43:05.05 |
+57:28:10.2 |
HIP 17361 |
5.80 |
| 2026-10-05 12:00 |
03:43:03.69 |
+57:28:14.9 |
HIP 17361 |
5.70 |
| 2026-10-06 00:00 |
03:43:02.32 |
+57:28:19.5 |
HIP 17361 |
5.62 |
| 2026-10-06 12:00 |
03:43:00.94 |
+57:28:24.0 |
HIP 17361 |
5.54 |
| 2026-10-07 00:00 |
03:42:59.55 |
+57:28:28.4 |
HIP 17361 |
5.46 |
| 2026-10-07 12:00 |
03:42:58.15 |
+57:28:32.7 |
HIP 17361 |
5.40 |
| 2026-10-08 00:00 |
03:42:56.73 |
+57:28:37.0 |
HIP 17361 |
5.34 |
| 2026-10-08 12:00 |
03:42:55.31 |
+57:28:41.2 |
HIP 17361 |
5.29 |
| 2026-10-09 00:00 |
03:42:53.87 |
+57:28:45.3 |
HIP 17361 |
5.25 |
| 2026-10-09 12:00 |
03:42:52.42 |
+57:28:49.3 |
HIP 17361 |
5.22 |
| 2026-10-10 00:00 |
03:42:50.96 |
+57:28:53.3 |
HIP 17361 |
5.20 |
| 2026-10-10 12:00 |
03:42:49.49 |
+57:28:57.2 |
HIP 17361 |
5.19 |
| 2026-10-11 00:00 |
03:42:48.01 |
+57:29:01.0 |
HIP 17361 |
5.19 |