메타데이터
| 항목 |
값 |
| Designation |
C/1991 T2 (Shoemaker-Levy) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1992-07-24T12:09:31.147200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:41Z |
| Obs used |
212 |
| NEO |
- |
| M1 |
7.800 |
| K1 |
10.750 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1992-03-10.0000000 |
| e |
0.99986094 |
| q (au) |
0.836262 |
| a (au) |
6013.613507 |
| i (deg) |
113.496746 |
| Ω (om, deg) |
49.049164 |
| ω (w, deg) |
145.238453 |
| M (ma, deg) |
359.999711 |
밝기
산란 + 전체 선형
$$
M_a = (8.493 + 3.615\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.493 |
| n |
3.615 |
| gf |
0.800 |
| gb |
-0.594 |
| k |
0.800 |
| δ90 |
2.404 |
| 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 |
| 1991-10-06 |
1992-04-05 |
+3.9104 |
-1.690 |
| 1992-04-05 |
1992-07-24 |
-0.6095 |
+0.014 |
| 1992-07-24 |
1992-08-19 |
+3.5301 |
+0.260 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
05:06:43.19 |
-20:05:08.2 |
HIP 23806 |
4.31 |
| 2026-05-12 12:00 |
05:06:45.04 |
-20:04:56.6 |
HIP 23806 |
4.01 |
| 2026-05-13 00:00 |
05:06:46.91 |
-20:04:45.1 |
HIP 23806 |
3.74 |
| 2026-05-13 12:00 |
05:06:48.78 |
-20:04:33.7 |
HIP 23806 |
3.51 |
| 2026-05-14 00:00 |
05:06:50.66 |
-20:04:22.5 |
HIP 23806 |
3.34 |
| 2026-05-14 12:00 |
05:06:52.55 |
-20:04:11.5 |
HIP 23806 |
3.22 |
| 2026-05-15 00:00 |
05:06:54.45 |
-20:04:00.6 |
HIP 23806 |
3.17 |
| 2026-05-15 12:00 |
05:06:56.35 |
-20:03:49.8 |
HIP 23806 |
3.19 |
| 2026-05-16 00:00 |
05:06:58.26 |
-20:03:39.2 |
HIP 23806 |
3.27 |
| 2026-05-16 12:00 |
05:07:00.18 |
-20:03:28.8 |
HIP 23806 |
3.42 |
| 2026-05-17 00:00 |
05:07:02.10 |
-20:03:18.5 |
HIP 23806 |
3.63 |
| 2026-05-17 12:00 |
05:07:04.03 |
-20:03:08.4 |
HIP 23806 |
3.88 |
| 2026-05-18 00:00 |
05:07:05.96 |
-20:02:58.4 |
HIP 23806 |
4.18 |
| 2026-05-18 12:00 |
05:07:07.91 |
-20:02:48.6 |
HIP 23806 |
4.50 |
| 2026-05-19 00:00 |
05:07:09.85 |
-20:02:39.0 |
HIP 23806 |
4.85 |
| 2026-05-19 12:00 |
05:07:11.81 |
-20:02:29.5 |
HIP 23806 |
5.22 |
| 2026-05-20 00:00 |
05:07:13.77 |
-20:02:20.1 |
HIP 23806 |
5.60 |
| 2026-05-20 12:00 |
05:07:15.73 |
-20:02:10.9 |
HIP 23806 |
6.00 |
| 2026-05-21 00:00 |
05:07:17.70 |
-20:02:01.9 |
HIP 23806 |
6.41 |
| 2026-05-21 12:00 |
05:07:19.68 |
-20:01:53.1 |
HIP 23806 |
6.83 |
| 2026-05-22 00:00 |
05:07:21.66 |
-20:01:44.4 |
HIP 23806 |
7.26 |
| 2026-05-22 12:00 |
05:07:23.65 |
-20:01:35.8 |
HIP 23806 |
7.69 |
| 2026-05-23 00:00 |
05:07:25.64 |
-20:01:27.4 |
HIP 23806 |
8.13 |
| 2026-05-23 12:00 |
05:07:27.63 |
-20:01:19.2 |
HIP 23806 |
8.57 |
| 2026-05-24 00:00 |
05:07:29.63 |
-20:01:11.2 |
HIP 23806 |
9.02 |
| 2026-05-24 12:00 |
05:07:31.64 |
-20:01:03.3 |
HIP 23888 |
9.17 |
| 2026-05-25 00:00 |
05:07:33.65 |
-20:00:55.5 |
HIP 23888 |
8.92 |
| 2026-05-25 12:00 |
05:07:35.66 |
-20:00:48.0 |
HIP 23888 |
8.68 |
| 2026-05-26 00:00 |
05:07:37.68 |
-20:00:40.6 |
HIP 23888 |
8.47 |
| 2026-05-26 12:00 |
05:07:39.70 |
-20:00:33.3 |
HIP 23888 |
8.28 |
| 2026-05-27 00:00 |
05:07:41.72 |
-20:00:26.2 |
HIP 23888 |
8.11 |
| 2026-05-27 12:00 |
05:07:43.75 |
-20:00:19.3 |
HIP 23888 |
7.96 |
| 2026-05-28 00:00 |
05:07:45.79 |
-20:00:12.6 |
HIP 23888 |
7.84 |
| 2026-05-28 12:00 |
05:07:47.82 |
-20:00:06.0 |
HIP 23888 |
7.75 |
| 2026-05-29 00:00 |
05:07:49.86 |
-19:59:59.6 |
HIP 23888 |
7.68 |
| 2026-05-29 12:00 |
05:07:51.90 |
-19:59:53.3 |
HIP 23888 |
7.64 |
| 2026-05-30 00:00 |
05:07:53.94 |
-19:59:47.2 |
HIP 23888 |
7.63 |
| 2026-05-30 12:00 |
05:07:55.99 |
-19:59:41.3 |
HIP 23888 |
7.65 |
| 2026-05-31 00:00 |
05:07:58.04 |
-19:59:35.5 |
HIP 23888 |
7.69 |
| 2026-05-31 12:00 |
05:08:00.09 |
-19:59:29.9 |
HIP 23888 |
7.77 |
| 2026-06-01 00:00 |
05:08:02.15 |
-19:59:24.5 |
HIP 23888 |
7.87 |
| 2026-06-01 12:00 |
05:08:04.21 |
-19:59:19.2 |
HIP 23888 |
8.00 |
| 2026-06-02 00:00 |
05:08:06.27 |
-19:59:14.1 |
HIP 23888 |
8.15 |