메타데이터
| 항목 |
값 |
| Designation |
91P/Russell 3 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2005-06-27T02:09:49.521600Z |
| Orbit solution date (soln_date, UTC) |
2021-09-07T13:51:26Z |
| Obs used |
337 |
| NEO |
- |
| M1 |
7.700 |
| K1 |
21.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-04-19.0000000 |
| e |
0.33022414 |
| q (au) |
2.605665 |
| a (au) |
3.890354 |
| i (deg) |
14.092166 |
| Ω (om, deg) |
247.895980 |
| ω (w, deg) |
354.865752 |
| M (ma, deg) |
131.902421 |
밝기
산란 + 전체 선형
$$
M_a = (17.424 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
17.424 |
| n |
2.000 |
| gf |
0.832 |
| gb |
-0.704 |
| k |
0.891 |
| δ90 |
2.147 |
| 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 |
07:50:07.22 |
+10:13:46.1 |
HIP 38263 |
16.97 |
| 2026-07-29 12:00 |
07:50:37.24 |
+10:11:51.8 |
HIP 38263 |
18.89 |
| 2026-07-30 00:00 |
07:51:07.25 |
+10:09:56.9 |
HIP 38263 |
23.29 |
| 2026-07-30 12:00 |
07:51:37.24 |
+10:08:01.3 |
HIP 38273 |
27.76 |
| 2026-07-31 00:00 |
07:52:07.22 |
+10:06:05.0 |
HIP 38273 |
31.49 |
| 2026-07-31 12:00 |
07:52:37.17 |
+10:04:08.1 |
HIP 38273 |
36.45 |
| 2026-08-01 00:00 |
07:53:07.12 |
+10:02:10.5 |
HIP 38672 |
35.51 |
| 2026-08-01 12:00 |
07:53:37.04 |
+10:00:12.3 |
HIP 38672 |
31.28 |
| 2026-08-02 00:00 |
07:54:06.94 |
+09:58:13.4 |
HIP 38672 |
28.52 |
| 2026-08-02 12:00 |
07:54:36.83 |
+09:56:13.8 |
HIP 38672 |
27.66 |
| 2026-08-03 00:00 |
07:55:06.70 |
+09:54:13.6 |
HIP 38672 |
28.86 |
| 2026-08-03 12:00 |
07:55:36.55 |
+09:52:12.8 |
HIP 38682 |
31.84 |
| 2026-08-04 00:00 |
07:56:06.38 |
+09:50:11.3 |
HIP 38682 |
32.22 |
| 2026-08-04 12:00 |
07:56:36.18 |
+09:48:09.2 |
HIP 38682 |
34.32 |
| 2026-08-05 00:00 |
07:57:05.97 |
+09:46:06.4 |
HIP 38992 |
33.58 |
| 2026-08-05 12:00 |
07:57:35.73 |
+09:44:02.9 |
HIP 39058 |
29.62 |
| 2026-08-06 00:00 |
07:58:05.48 |
+09:41:58.8 |
HIP 39058 |
24.27 |
| 2026-08-06 12:00 |
07:58:35.19 |
+09:39:54.1 |
HIP 39058 |
20.43 |
| 2026-08-07 00:00 |
07:59:04.89 |
+09:37:48.7 |
HIP 39058 |
19.02 |
| 2026-08-07 12:00 |
07:59:34.56 |
+09:35:42.7 |
HIP 39096 |
18.81 |
| 2026-08-08 00:00 |
08:00:04.20 |
+09:33:36.1 |
HIP 39096 |
20.52 |
| 2026-08-08 12:00 |
08:00:33.82 |
+09:31:28.8 |
HIP 39258 |
17.76 |
| 2026-08-09 00:00 |
08:01:03.41 |
+09:29:20.8 |
HIP 39258 |
12.50 |
| 2026-08-09 12:00 |
08:01:32.98 |
+09:27:12.3 |
HIP 39258 |
10.63 |
| 2026-08-10 00:00 |
08:02:02.52 |
+09:25:03.1 |
HIP 39258 |
13.61 |
| 2026-08-10 12:00 |
08:02:32.02 |
+09:22:53.3 |
HIP 39258 |
19.31 |
| 2026-08-11 00:00 |
08:03:01.50 |
+09:20:42.8 |
HIP 39506 |
22.24 |
| 2026-08-11 12:00 |
08:03:30.95 |
+09:18:31.7 |
HIP 39506 |
14.70 |
| 2026-08-12 00:00 |
08:04:00.37 |
+09:16:20.0 |
HIP 39506 |
7.24 |
| 2026-08-12 12:00 |
08:04:29.75 |
+09:14:07.7 |
HIP 39506 |
1.94 |
| 2026-08-13 00:00 |
08:04:59.11 |
+09:11:54.8 |
HIP 39506 |
8.37 |
| 2026-08-13 12:00 |
08:05:28.42 |
+09:09:41.3 |
HIP 39632 |
12.54 |
| 2026-08-14 00:00 |
08:05:57.71 |
+09:07:27.1 |
HIP 39632 |
12.39 |
| 2026-08-14 12:00 |
08:06:26.96 |
+09:05:12.3 |
HIP 39632 |
16.26 |
| 2026-08-15 00:00 |
08:06:56.17 |
+09:02:57.0 |
HIP 39821 |
19.94 |
| 2026-08-15 12:00 |
08:07:25.35 |
+09:00:41.0 |
HIP 39821 |
14.91 |
| 2026-08-16 00:00 |
08:07:54.49 |
+08:58:24.4 |
HIP 39821 |
12.70 |
| 2026-08-16 12:00 |
08:08:23.60 |
+08:56:07.3 |
HIP 39821 |
14.64 |
| 2026-08-17 00:00 |
08:08:52.66 |
+08:53:49.5 |
HIP 39821 |
19.53 |
| 2026-08-17 12:00 |
08:09:21.69 |
+08:51:31.2 |
HIP 39936 |
17.85 |
| 2026-08-18 00:00 |
08:09:50.68 |
+08:49:12.3 |
HIP 39936 |
17.08 |
| 2026-08-18 12:00 |
08:10:19.62 |
+08:46:52.7 |
HIP 39936 |
19.44 |
| 2026-08-19 00:00 |
08:10:48.53 |
+08:44:32.7 |
HIP 40141 |
16.09 |