메타데이터
| 항목 |
값 |
| Designation |
92P/Sanguin |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-03-01T04:24:17.484480Z |
| Orbit solution date (soln_date, UTC) |
2015-12-09T11:26:49Z |
| Obs used |
919 |
| NEO |
- |
| M1 |
11.100 |
| K1 |
17.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-12-19.0000000 |
| e |
0.65932548 |
| q (au) |
1.825456 |
| a (au) |
5.358357 |
| i (deg) |
19.444606 |
| Ω (om, deg) |
181.458916 |
| ω (w, deg) |
163.789034 |
| M (ma, deg) |
23.267628 |
밝기
산란 + 전체 선형
$$
M_a = (17.783 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
17.783 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.590 |
| k |
0.800 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2014-04-30 |
2014-08-21 |
+1.5336 |
-0.375 |
| 2015-09-19 |
2016-01-13 |
+4.8411 |
-2.744 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
15:47:38.60 |
-03:14:28.4 |
HIP 77429 |
20.37 |
| 2026-03-26 12:00 |
15:47:34.92 |
-03:11:44.2 |
HIP 77429 |
18.73 |
| 2026-03-27 00:00 |
15:47:31.00 |
-03:08:59.2 |
HIP 77429 |
17.46 |
| 2026-03-27 12:00 |
15:47:26.85 |
-03:06:13.5 |
HIP 77429 |
16.64 |
| 2026-03-28 00:00 |
15:47:22.48 |
-03:03:27.1 |
HIP 77429 |
16.38 |
| 2026-03-28 12:00 |
15:47:17.87 |
-03:00:40.0 |
HIP 77429 |
16.70 |
| 2026-03-29 00:00 |
15:47:13.03 |
-02:57:52.2 |
HIP 77429 |
17.61 |
| 2026-03-29 12:00 |
15:47:07.96 |
-02:55:03.7 |
HIP 77332 |
18.15 |
| 2026-03-30 00:00 |
15:47:02.66 |
-02:52:14.5 |
HIP 77332 |
15.59 |
| 2026-03-30 12:00 |
15:46:57.14 |
-02:49:24.7 |
HIP 77332 |
13.28 |
| 2026-03-31 00:00 |
15:46:51.38 |
-02:46:34.3 |
HIP 77332 |
11.40 |
| 2026-03-31 12:00 |
15:46:45.39 |
-02:43:43.3 |
HIP 77332 |
10.23 |
| 2026-04-01 00:00 |
15:46:39.18 |
-02:40:51.6 |
HIP 77332 |
10.04 |
| 2026-04-01 12:00 |
15:46:32.73 |
-02:37:59.3 |
HIP 77332 |
10.94 |
| 2026-04-02 00:00 |
15:46:26.06 |
-02:35:06.5 |
HIP 77332 |
12.71 |
| 2026-04-02 12:00 |
15:46:19.16 |
-02:32:13.1 |
HIP 77332 |
15.07 |
| 2026-04-03 00:00 |
15:46:12.03 |
-02:29:19.2 |
HIP 77185 |
15.92 |
| 2026-04-03 12:00 |
15:46:04.67 |
-02:26:24.7 |
HIP 77185 |
12.48 |
| 2026-04-04 00:00 |
15:45:57.09 |
-02:23:29.7 |
HIP 77185 |
9.01 |
| 2026-04-04 12:00 |
15:45:49.28 |
-02:20:34.2 |
HIP 77185 |
5.51 |
| 2026-04-05 00:00 |
15:45:41.25 |
-02:17:38.2 |
HIP 77185 |
2.03 |
| 2026-04-05 12:00 |
15:45:32.99 |
-02:14:41.8 |
HIP 77185 |
1.83 |
| 2026-04-06 00:00 |
15:45:24.50 |
-02:11:44.9 |
HIP 77185 |
5.37 |
| 2026-04-06 12:00 |
15:45:15.79 |
-02:08:47.6 |
HIP 77185 |
9.03 |
| 2026-04-07 00:00 |
15:45:06.86 |
-02:05:49.8 |
HIP 77185 |
12.73 |
| 2026-04-07 12:00 |
15:44:57.70 |
-02:02:51.7 |
HIP 77185 |
16.48 |
| 2026-04-08 00:00 |
15:44:48.32 |
-01:59:53.2 |
HIP 77185 |
20.27 |
| 2026-04-08 12:00 |
15:44:38.72 |
-01:56:54.4 |
HIP 77027 |
21.06 |
| 2026-04-09 00:00 |
15:44:28.90 |
-01:53:55.2 |
HIP 77027 |
17.24 |
| 2026-04-09 12:00 |
15:44:18.86 |
-01:50:55.6 |
HIP 77027 |
13.40 |
| 2026-04-10 00:00 |
15:44:08.60 |
-01:47:55.8 |
HIP 77027 |
9.56 |
| 2026-04-10 12:00 |
15:43:58.13 |
-01:44:55.8 |
HIP 77027 |
5.81 |
| 2026-04-11 00:00 |
15:43:47.43 |
-01:41:55.4 |
HIP 77027 |
2.76 |
| 2026-04-11 12:00 |
15:43:36.52 |
-01:38:54.8 |
HIP 77027 |
3.72 |
| 2026-04-12 00:00 |
15:43:25.40 |
-01:35:54.0 |
HIP 77027 |
7.30 |
| 2026-04-12 12:00 |
15:43:14.06 |
-01:32:53.1 |
HIP 76991 |
11.08 |
| 2026-04-13 00:00 |
15:43:02.51 |
-01:29:51.9 |
HIP 76921 |
11.47 |
| 2026-04-13 12:00 |
15:42:50.75 |
-01:26:50.6 |
HIP 76921 |
7.58 |
| 2026-04-14 00:00 |
15:42:38.78 |
-01:23:49.2 |
HIP 76921 |
4.30 |
| 2026-04-14 12:00 |
15:42:26.60 |
-01:20:47.7 |
HIP 76921 |
3.95 |
| 2026-04-15 00:00 |
15:42:14.22 |
-01:17:46.1 |
HIP 76921 |
7.05 |
| 2026-04-15 12:00 |
15:42:01.63 |
-01:14:44.4 |
HIP 76921 |
11.04 |
| 2026-04-16 00:00 |
15:41:48.84 |
-01:11:42.7 |
HIP 76921 |
15.27 |