메타데이터
| 항목 |
값 |
| Designation |
C/1976 J1 (Harlan) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1976-11-03T03:38:09.047040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:24Z |
| Obs used |
41 |
| NEO |
- |
| M1 |
9.000 |
| K1 |
10.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1976-06-27.0000000 |
| e |
0.99974240 |
| q (au) |
1.568851 |
| a (au) |
6090.351371 |
| i (deg) |
38.805628 |
| Ω (om, deg) |
81.411634 |
| ω (w, deg) |
193.265529 |
| M (ma, deg) |
359.999732 |
밝기
산란 + 전체 선형
$$
M_a = (13.852 + 2.696\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.852 |
| n |
2.696 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
05:11:26.11 |
+20:55:00.3 |
HIP 24116 |
22.72 |
| 2026-06-01 12:00 |
05:11:27.77 |
+20:55:02.8 |
HIP 24116 |
22.91 |
| 2026-06-02 00:00 |
05:11:29.44 |
+20:55:05.2 |
HIP 24116 |
23.11 |
| 2026-06-02 12:00 |
05:11:31.12 |
+20:55:07.6 |
HIP 24116 |
23.32 |
| 2026-06-03 00:00 |
05:11:32.79 |
+20:55:10.1 |
HIP 24116 |
23.53 |
| 2026-06-03 12:00 |
05:11:34.46 |
+20:55:12.5 |
HIP 24116 |
23.74 |
| 2026-06-04 00:00 |
05:11:36.14 |
+20:55:14.9 |
HIP 24116 |
23.96 |
| 2026-06-04 12:00 |
05:11:37.82 |
+20:55:17.3 |
HIP 24116 |
24.19 |
| 2026-06-05 00:00 |
05:11:39.50 |
+20:55:19.7 |
HIP 24116 |
24.41 |
| 2026-06-05 12:00 |
05:11:41.18 |
+20:55:22.1 |
HIP 24116 |
24.65 |
| 2026-06-06 00:00 |
05:11:42.86 |
+20:55:24.5 |
HIP 24116 |
24.88 |
| 2026-06-06 12:00 |
05:11:44.54 |
+20:55:26.9 |
HIP 24116 |
25.12 |
| 2026-06-07 00:00 |
05:11:46.22 |
+20:55:29.2 |
HIP 24116 |
25.37 |
| 2026-06-07 12:00 |
05:11:47.90 |
+20:55:31.6 |
HIP 24116 |
25.62 |
| 2026-06-08 00:00 |
05:11:49.59 |
+20:55:34.0 |
HIP 24116 |
25.87 |
| 2026-06-08 12:00 |
05:11:51.27 |
+20:55:36.3 |
HIP 24116 |
26.12 |
| 2026-06-09 00:00 |
05:11:52.96 |
+20:55:38.7 |
HIP 24116 |
26.38 |
| 2026-06-09 12:00 |
05:11:54.64 |
+20:55:41.0 |
HIP 24116 |
26.64 |
| 2026-06-10 00:00 |
05:11:56.33 |
+20:55:43.3 |
HIP 24116 |
26.91 |
| 2026-06-10 12:00 |
05:11:58.02 |
+20:55:45.6 |
HIP 24116 |
27.18 |
| 2026-06-11 00:00 |
05:11:59.70 |
+20:55:48.0 |
HIP 24116 |
27.45 |
| 2026-06-11 12:00 |
05:12:01.39 |
+20:55:50.3 |
HIP 24116 |
27.72 |
| 2026-06-12 00:00 |
05:12:03.07 |
+20:55:52.5 |
HIP 24116 |
28.00 |
| 2026-06-12 12:00 |
05:12:04.76 |
+20:55:54.8 |
HIP 24116 |
28.28 |
| 2026-06-13 00:00 |
05:12:06.44 |
+20:55:57.1 |
HIP 24116 |
28.56 |
| 2026-06-13 12:00 |
05:12:08.12 |
+20:55:59.4 |
HIP 24116 |
28.84 |
| 2026-06-14 00:00 |
05:12:09.81 |
+20:56:01.6 |
HIP 24116 |
29.13 |
| 2026-06-14 12:00 |
05:12:11.49 |
+20:56:03.9 |
HIP 24116 |
29.42 |
| 2026-06-15 00:00 |
05:12:13.17 |
+20:56:06.1 |
HIP 24116 |
29.71 |
| 2026-06-15 12:00 |
05:12:14.85 |
+20:56:08.4 |
HIP 24116 |
30.00 |
| 2026-06-16 00:00 |
05:12:16.53 |
+20:56:10.6 |
HIP 24116 |
30.30 |
| 2026-06-16 12:00 |
05:12:18.20 |
+20:56:12.8 |
HIP 24403 |
30.42 |
| 2026-06-17 00:00 |
05:12:19.88 |
+20:56:15.0 |
HIP 24403 |
30.08 |
| 2026-06-17 12:00 |
05:12:21.55 |
+20:56:17.2 |
HIP 24403 |
29.74 |
| 2026-06-18 00:00 |
05:12:23.23 |
+20:56:19.4 |
HIP 24403 |
29.40 |
| 2026-06-18 12:00 |
05:12:24.90 |
+20:56:21.5 |
HIP 24403 |
29.06 |
| 2026-06-19 00:00 |
05:12:26.57 |
+20:56:23.7 |
HIP 24403 |
28.72 |
| 2026-06-19 12:00 |
05:12:28.23 |
+20:56:25.8 |
HIP 24403 |
28.39 |
| 2026-06-20 00:00 |
05:12:29.90 |
+20:56:28.0 |
HIP 24403 |
28.06 |
| 2026-06-20 12:00 |
05:12:31.56 |
+20:56:30.1 |
HIP 24403 |
27.73 |
| 2026-06-21 00:00 |
05:12:33.22 |
+20:56:32.2 |
HIP 24403 |
27.40 |
| 2026-06-21 12:00 |
05:12:34.87 |
+20:56:34.3 |
HIP 24403 |
27.08 |
| 2026-06-22 00:00 |
05:12:36.53 |
+20:56:36.4 |
HIP 24403 |
26.75 |