메타데이터
| 항목 |
값 |
| Designation |
C/1999 J3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1999-09-20T04:00:17.066880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:59Z |
| Obs used |
187 |
| NEO |
- |
| M1 |
11.300 |
| K1 |
13.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1999-09-08.0000000 |
| e |
0.99938639 |
| q (au) |
0.976809 |
| a (au) |
1591.905151 |
| i (deg) |
101.656036 |
| Ω (om, deg) |
228.978961 |
| ω (w, deg) |
161.980562 |
| M (ma, deg) |
359.999811 |
밝기
산란 + 전체 선형
$$
M_a = (8.592 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.592 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.502 |
| k |
1.000 |
| δ90 |
1.121 |
| 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 |
| 1999-05-12 |
1999-06-07 |
+9.5620 |
-1.775 |
| 1999-06-07 |
1999-07-27 |
+9.4778 |
-1.593 |
| 1999-07-27 |
1999-08-14 |
+2.1427 |
-0.123 |
| 1999-08-14 |
1999-09-20 |
-2.6402 |
+0.207 |
| 1999-09-20 |
1999-10-26 |
+1.7372 |
+0.240 |
| 1999-10-26 |
1999-11-16 |
-22.4430 |
+1.444 |
| 1999-11-16 |
2000-02-28 |
+1.5136 |
-1.953 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
14:48:08.49 |
-51:57:42.5 |
HIP 72308 |
16.94 |
| 2026-06-01 12:00 |
14:48:05.12 |
-51:57:24.4 |
HIP 72308 |
16.95 |
| 2026-06-02 00:00 |
14:48:01.77 |
-51:57:06.2 |
HIP 72308 |
16.98 |
| 2026-06-02 12:00 |
14:47:58.44 |
-51:56:47.9 |
HIP 72308 |
17.04 |
| 2026-06-03 00:00 |
14:47:55.12 |
-51:56:29.4 |
HIP 72308 |
17.12 |
| 2026-06-03 12:00 |
14:47:51.81 |
-51:56:10.9 |
HIP 72308 |
17.22 |
| 2026-06-04 00:00 |
14:47:48.53 |
-51:55:52.2 |
HIP 72308 |
17.35 |
| 2026-06-04 12:00 |
14:47:45.26 |
-51:55:33.3 |
HIP 72308 |
17.50 |
| 2026-06-05 00:00 |
14:47:42.00 |
-51:55:14.4 |
HIP 72308 |
17.66 |
| 2026-06-05 12:00 |
14:47:38.76 |
-51:54:55.3 |
HIP 72308 |
17.85 |
| 2026-06-06 00:00 |
14:47:35.54 |
-51:54:36.1 |
HIP 72308 |
18.06 |
| 2026-06-06 12:00 |
14:47:32.34 |
-51:54:16.8 |
HIP 72308 |
18.29 |
| 2026-06-07 00:00 |
14:47:29.15 |
-51:53:57.4 |
HIP 72308 |
18.53 |
| 2026-06-07 12:00 |
14:47:25.98 |
-51:53:37.8 |
HIP 72308 |
18.80 |
| 2026-06-08 00:00 |
14:47:22.83 |
-51:53:18.1 |
HIP 72308 |
19.08 |
| 2026-06-08 12:00 |
14:47:19.70 |
-51:52:58.4 |
HIP 72308 |
19.37 |
| 2026-06-09 00:00 |
14:47:16.59 |
-51:52:38.5 |
HIP 72386 |
19.35 |
| 2026-06-09 12:00 |
14:47:13.49 |
-51:52:18.5 |
HIP 72386 |
19.22 |
| 2026-06-10 00:00 |
14:47:10.41 |
-51:51:58.3 |
HIP 72386 |
19.10 |
| 2026-06-10 12:00 |
14:47:07.36 |
-51:51:38.1 |
HIP 72386 |
18.99 |
| 2026-06-11 00:00 |
14:47:04.32 |
-51:51:17.8 |
HIP 72386 |
18.90 |
| 2026-06-11 12:00 |
14:47:01.30 |
-51:50:57.3 |
HIP 72386 |
18.83 |
| 2026-06-12 00:00 |
14:46:58.30 |
-51:50:36.8 |
HIP 72386 |
18.77 |
| 2026-06-12 12:00 |
14:46:55.32 |
-51:50:16.2 |
HIP 72386 |
18.72 |
| 2026-06-13 00:00 |
14:46:52.37 |
-51:49:55.4 |
HIP 72386 |
18.69 |
| 2026-06-13 12:00 |
14:46:49.43 |
-51:49:34.6 |
HIP 72386 |
18.67 |
| 2026-06-14 00:00 |
14:46:46.51 |
-51:49:13.7 |
HIP 72386 |
18.67 |
| 2026-06-14 12:00 |
14:46:43.62 |
-51:48:52.6 |
HIP 72386 |
18.68 |
| 2026-06-15 00:00 |
14:46:40.74 |
-51:48:31.5 |
HIP 72386 |
18.71 |
| 2026-06-15 12:00 |
14:46:37.89 |
-51:48:10.3 |
HIP 72386 |
18.75 |
| 2026-06-16 00:00 |
14:46:35.06 |
-51:47:49.0 |
HIP 72386 |
18.80 |
| 2026-06-16 12:00 |
14:46:32.25 |
-51:47:27.6 |
HIP 72386 |
18.87 |
| 2026-06-17 00:00 |
14:46:29.46 |
-51:47:06.1 |
HIP 72386 |
18.95 |
| 2026-06-17 12:00 |
14:46:26.69 |
-51:46:44.5 |
HIP 72386 |
19.04 |
| 2026-06-18 00:00 |
14:46:23.95 |
-51:46:22.9 |
HIP 72386 |
19.14 |
| 2026-06-18 12:00 |
14:46:21.23 |
-51:46:01.2 |
HIP 72386 |
19.26 |
| 2026-06-19 00:00 |
14:46:18.53 |
-51:45:39.3 |
HIP 72386 |
19.39 |
| 2026-06-19 12:00 |
14:46:15.86 |
-51:45:17.5 |
HIP 72386 |
19.53 |
| 2026-06-20 00:00 |
14:46:13.21 |
-51:44:55.5 |
HIP 72386 |
19.68 |
| 2026-06-20 12:00 |
14:46:10.58 |
-51:44:33.5 |
HIP 72386 |
19.84 |
| 2026-06-21 00:00 |
14:46:07.98 |
-51:44:11.4 |
HIP 72386 |
20.01 |
| 2026-06-21 12:00 |
14:46:05.40 |
-51:43:49.2 |
HIP 72386 |
20.19 |
| 2026-06-22 00:00 |
14:46:02.84 |
-51:43:26.9 |
HIP 72386 |
20.38 |