메타데이터
| 항목 |
값 |
| Designation |
175P/Hergenrother |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-05-22T23:00:09.181440Z |
| Orbit solution date (soln_date, UTC) |
2026-04-27T13:42:31Z |
| Obs used |
924 |
| NEO |
- |
| M1 |
10.200 |
| K1 |
20.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2012-02-26.0000000 |
| e |
0.43268420 |
| q (au) |
1.949246 |
| a (au) |
3.435910 |
| i (deg) |
6.069495 |
| Ω (om, deg) |
123.690044 |
| ω (w, deg) |
55.625115 |
| M (ma, deg) |
290.057709 |
밝기
산란 + 전체 선형
$$
M_a = (12.033 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.033 |
| n |
6.000 |
| gf |
0.972 |
| gb |
-0.890 |
| k |
1.000 |
| δ90 |
9.437 |
| 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 |
10:45:47.41 |
+11:23:16.9 |
HIP 52707 |
17.18 |
| 2026-07-29 12:00 |
10:46:43.81 |
+11:17:44.2 |
HIP 52707 |
6.90 |
| 2026-07-30 00:00 |
10:47:40.23 |
+11:12:10.7 |
HIP 52707 |
15.63 |
| 2026-07-30 12:00 |
10:48:36.67 |
+11:06:36.4 |
HIP 52707 |
29.77 |
| 2026-07-31 00:00 |
10:49:33.13 |
+11:01:01.3 |
HIP 52911 |
28.64 |
| 2026-07-31 12:00 |
10:50:29.61 |
+10:55:25.5 |
HIP 52911 |
29.11 |
| 2026-08-01 00:00 |
10:51:26.12 |
+10:49:48.8 |
HIP 53115 |
32.64 |
| 2026-08-01 12:00 |
10:52:22.65 |
+10:44:11.4 |
HIP 53200 |
33.76 |
| 2026-08-02 00:00 |
10:53:19.20 |
+10:38:33.2 |
HIP 53170 |
31.01 |
| 2026-08-02 12:00 |
10:54:15.77 |
+10:32:54.3 |
HIP 53170 |
33.70 |
| 2026-08-03 00:00 |
10:55:12.36 |
+10:27:14.6 |
HIP 53431 |
21.95 |
| 2026-08-03 12:00 |
10:56:08.98 |
+10:21:34.2 |
HIP 53431 |
15.05 |
| 2026-08-04 00:00 |
10:57:05.61 |
+10:15:53.0 |
HIP 53431 |
20.58 |
| 2026-08-04 12:00 |
10:58:02.26 |
+10:10:11.1 |
HIP 53727 |
26.56 |
| 2026-08-05 00:00 |
10:58:58.94 |
+10:04:28.5 |
HIP 53727 |
12.04 |
| 2026-08-05 12:00 |
10:59:55.64 |
+09:58:45.2 |
HIP 53727 |
6.27 |
| 2026-08-06 00:00 |
11:00:52.36 |
+09:53:01.1 |
HIP 53934 |
19.16 |
| 2026-08-06 12:00 |
11:01:49.09 |
+09:47:16.4 |
HIP 53934 |
8.27 |
| 2026-08-07 00:00 |
11:02:45.85 |
+09:41:30.9 |
HIP 53937 |
14.93 |
| 2026-08-07 12:00 |
11:03:42.63 |
+09:35:44.8 |
HIP 53937 |
28.88 |
| 2026-08-08 00:00 |
11:04:39.43 |
+09:29:58.0 |
HIP 54346 |
36.52 |
| 2026-08-08 12:00 |
11:05:36.25 |
+09:24:10.5 |
HIP 54346 |
25.38 |
| 2026-08-09 00:00 |
11:06:33.09 |
+09:18:22.4 |
HIP 54346 |
20.35 |
| 2026-08-09 12:00 |
11:07:29.95 |
+09:12:33.6 |
HIP 54417 |
14.29 |
| 2026-08-10 00:00 |
11:08:26.82 |
+09:06:44.2 |
HIP 54417 |
7.36 |
| 2026-08-10 12:00 |
11:09:23.72 |
+09:00:54.1 |
HIP 54417 |
19.14 |
| 2026-08-11 00:00 |
11:10:20.64 |
+08:55:03.4 |
HIP 54417 |
33.80 |
| 2026-08-11 12:00 |
11:11:17.57 |
+08:49:12.1 |
HIP 54789 |
28.78 |
| 2026-08-12 00:00 |
11:12:14.52 |
+08:43:20.2 |
HIP 54789 |
13.68 |
| 2026-08-12 12:00 |
11:13:11.49 |
+08:37:27.7 |
HIP 54789 |
3.35 |
| 2026-08-13 00:00 |
11:14:08.48 |
+08:31:34.6 |
HIP 54789 |
17.36 |
| 2026-08-13 12:00 |
11:15:05.49 |
+08:25:41.0 |
HIP 54863 |
27.08 |
| 2026-08-14 00:00 |
11:16:02.51 |
+08:19:46.7 |
HIP 54863 |
33.94 |
| 2026-08-14 12:00 |
11:16:59.55 |
+08:13:52.0 |
HIP 55122 |
29.23 |
| 2026-08-15 00:00 |
11:17:56.60 |
+08:07:56.6 |
HIP 55122 |
26.00 |
| 2026-08-15 12:00 |
11:18:53.67 |
+08:02:00.8 |
HIP 55352 |
27.72 |
| 2026-08-16 00:00 |
11:19:50.76 |
+07:56:04.4 |
HIP 55337 |
21.42 |
| 2026-08-16 12:00 |
11:20:47.86 |
+07:50:07.4 |
HIP 55337 |
20.01 |
| 2026-08-17 00:00 |
11:21:44.97 |
+07:44:10.0 |
HIP 55337 |
28.53 |
| 2026-08-17 12:00 |
11:22:42.10 |
+07:38:12.1 |
HIP 55605 |
38.54 |
| 2026-08-18 00:00 |
11:23:39.25 |
+07:32:13.7 |
HIP 55605 |
30.81 |
| 2026-08-18 12:00 |
11:24:36.41 |
+07:26:14.8 |
HIP 55605 |
29.75 |
| 2026-08-19 00:00 |
11:25:33.58 |
+07:20:15.5 |
HIP 55605 |
35.99 |