메타데이터
| 항목 |
값 |
| Designation |
C/1991 Q1 (McNaught-Russell) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1992-05-03T10:52:23.122560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:41Z |
| Obs used |
29 |
| NEO |
- |
| M1 |
5.000 |
| K1 |
15.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1992-08-12.0000000 |
| e |
0.99448867 |
| q (au) |
3.193967 |
| a (au) |
579.527657 |
| i (deg) |
90.506206 |
| Ω (om, deg) |
120.462895 |
| ω (w, deg) |
257.232969 |
| M (ma, deg) |
0.007103 |
밝기
산란 + 전체 선형
$$
M_a = (13.014 + 2.500\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.014 |
| n |
2.500 |
| gf |
1.000 |
| gb |
-0.876 |
| k |
0.968 |
| 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) |
| 2026-03-26 00:00 |
09:42:06.22 |
+68:24:59.8 |
HIP 47461 |
11.31 |
| 2026-03-26 12:00 |
09:42:02.20 |
+68:24:48.3 |
HIP 47461 |
11.16 |
| 2026-03-27 00:00 |
09:41:58.20 |
+68:24:36.6 |
HIP 47461 |
11.02 |
| 2026-03-27 12:00 |
09:41:54.25 |
+68:24:24.6 |
HIP 47461 |
10.90 |
| 2026-03-28 00:00 |
09:41:50.32 |
+68:24:12.5 |
HIP 47461 |
10.80 |
| 2026-03-28 12:00 |
09:41:46.43 |
+68:24:00.2 |
HIP 47461 |
10.72 |
| 2026-03-29 00:00 |
09:41:42.58 |
+68:23:47.6 |
HIP 47461 |
10.66 |
| 2026-03-29 12:00 |
09:41:38.77 |
+68:23:34.9 |
HIP 47461 |
10.62 |
| 2026-03-30 00:00 |
09:41:34.98 |
+68:23:22.0 |
HIP 47461 |
10.60 |
| 2026-03-30 12:00 |
09:41:31.24 |
+68:23:08.8 |
HIP 47461 |
10.61 |
| 2026-03-31 00:00 |
09:41:27.53 |
+68:22:55.5 |
HIP 47461 |
10.63 |
| 2026-03-31 12:00 |
09:41:23.86 |
+68:22:42.0 |
HIP 47461 |
10.67 |
| 2026-04-01 00:00 |
09:41:20.23 |
+68:22:28.3 |
HIP 47461 |
10.73 |
| 2026-04-01 12:00 |
09:41:16.63 |
+68:22:14.4 |
HIP 47461 |
10.81 |
| 2026-04-02 00:00 |
09:41:13.07 |
+68:22:00.3 |
HIP 47461 |
10.90 |
| 2026-04-02 12:00 |
09:41:09.55 |
+68:21:46.0 |
HIP 47461 |
11.02 |
| 2026-04-03 00:00 |
09:41:06.06 |
+68:21:31.6 |
HIP 47461 |
11.15 |
| 2026-04-03 12:00 |
09:41:02.61 |
+68:21:16.9 |
HIP 47461 |
11.30 |
| 2026-04-04 00:00 |
09:40:59.21 |
+68:21:02.1 |
HIP 47461 |
11.47 |
| 2026-04-04 12:00 |
09:40:55.84 |
+68:20:47.0 |
HIP 47461 |
11.65 |
| 2026-04-05 00:00 |
09:40:52.51 |
+68:20:31.8 |
HIP 47461 |
11.84 |
| 2026-04-05 12:00 |
09:40:49.22 |
+68:20:16.5 |
HIP 47461 |
12.05 |
| 2026-04-06 00:00 |
09:40:45.96 |
+68:20:00.9 |
HIP 47461 |
12.27 |
| 2026-04-06 12:00 |
09:40:42.75 |
+68:19:45.2 |
HIP 47461 |
12.50 |
| 2026-04-07 00:00 |
09:40:39.58 |
+68:19:29.3 |
HIP 47461 |
12.74 |
| 2026-04-07 12:00 |
09:40:36.44 |
+68:19:13.2 |
HIP 47461 |
13.00 |
| 2026-04-08 00:00 |
09:40:33.35 |
+68:18:56.9 |
HIP 47461 |
13.26 |
| 2026-04-08 12:00 |
09:40:30.30 |
+68:18:40.5 |
HIP 47461 |
13.53 |
| 2026-04-09 00:00 |
09:40:27.29 |
+68:18:23.9 |
HIP 47461 |
13.82 |
| 2026-04-09 12:00 |
09:40:24.32 |
+68:18:07.1 |
HIP 47461 |
14.10 |
| 2026-04-10 00:00 |
09:40:21.39 |
+68:17:50.2 |
HIP 47461 |
14.40 |
| 2026-04-10 12:00 |
09:40:18.50 |
+68:17:33.1 |
HIP 47461 |
14.70 |
| 2026-04-11 00:00 |
09:40:15.65 |
+68:17:15.8 |
HIP 47461 |
15.01 |
| 2026-04-11 12:00 |
09:40:12.84 |
+68:16:58.4 |
HIP 47461 |
15.33 |
| 2026-04-12 00:00 |
09:40:10.08 |
+68:16:40.8 |
HIP 47461 |
15.65 |
| 2026-04-12 12:00 |
09:40:07.36 |
+68:16:23.1 |
HIP 47461 |
15.98 |
| 2026-04-13 00:00 |
09:40:04.68 |
+68:16:05.2 |
HIP 47207 |
15.90 |
| 2026-04-13 12:00 |
09:40:02.04 |
+68:15:47.1 |
HIP 47207 |
15.65 |
| 2026-04-14 00:00 |
09:39:59.44 |
+68:15:28.9 |
HIP 47207 |
15.40 |
| 2026-04-14 12:00 |
09:39:56.89 |
+68:15:10.5 |
HIP 47207 |
15.17 |
| 2026-04-15 00:00 |
09:39:54.38 |
+68:14:52.0 |
HIP 47207 |
14.95 |
| 2026-04-15 12:00 |
09:39:51.92 |
+68:14:33.4 |
HIP 47207 |
14.73 |
| 2026-04-16 00:00 |
09:39:49.49 |
+68:14:14.5 |
HIP 47348 |
14.46 |