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) |
| 2026-09-20 00:00 |
14:46:05.75 |
-50:44:34.4 |
HIP 72100 |
16.78 |
| 2026-09-20 12:00 |
14:46:08.25 |
-50:44:24.9 |
HIP 72100 |
16.93 |
| 2026-09-21 00:00 |
14:46:10.76 |
-50:44:15.7 |
HIP 72100 |
17.08 |
| 2026-09-21 12:00 |
14:46:13.30 |
-50:44:06.6 |
HIP 72100 |
17.25 |
| 2026-09-22 00:00 |
14:46:15.86 |
-50:43:57.6 |
HIP 72100 |
17.44 |
| 2026-09-22 12:00 |
14:46:18.43 |
-50:43:48.9 |
HIP 72100 |
17.63 |
| 2026-09-23 00:00 |
14:46:21.03 |
-50:43:40.3 |
HIP 72100 |
17.84 |
| 2026-09-23 12:00 |
14:46:23.65 |
-50:43:31.9 |
HIP 72100 |
18.06 |
| 2026-09-24 00:00 |
14:46:26.29 |
-50:43:23.6 |
HIP 72100 |
18.30 |
| 2026-09-24 12:00 |
14:46:28.94 |
-50:43:15.6 |
HIP 72100 |
18.54 |
| 2026-09-25 00:00 |
14:46:31.62 |
-50:43:07.7 |
HIP 72100 |
18.80 |
| 2026-09-25 12:00 |
14:46:34.32 |
-50:43:00.0 |
HIP 72100 |
19.07 |
| 2026-09-26 00:00 |
14:46:37.03 |
-50:42:52.4 |
HIP 72100 |
19.35 |
| 2026-09-26 12:00 |
14:46:39.77 |
-50:42:45.1 |
HIP 72100 |
19.64 |
| 2026-09-27 00:00 |
14:46:42.52 |
-50:42:37.9 |
HIP 72100 |
19.93 |
| 2026-09-27 12:00 |
14:46:45.30 |
-50:42:30.9 |
HIP 72100 |
20.24 |
| 2026-09-28 00:00 |
14:46:48.09 |
-50:42:24.0 |
HIP 72100 |
20.56 |
| 2026-09-28 12:00 |
14:46:50.90 |
-50:42:17.4 |
HIP 72100 |
20.89 |
| 2026-09-29 00:00 |
14:46:53.72 |
-50:42:10.9 |
HIP 72100 |
21.23 |
| 2026-09-29 12:00 |
14:46:56.57 |
-50:42:04.6 |
HIP 72313 |
21.22 |
| 2026-09-30 00:00 |
14:46:59.43 |
-50:41:58.5 |
HIP 72313 |
21.05 |
| 2026-09-30 12:00 |
14:47:02.32 |
-50:41:52.5 |
HIP 72313 |
20.89 |
| 2026-10-01 00:00 |
14:47:05.21 |
-50:41:46.8 |
HIP 72313 |
20.75 |
| 2026-10-01 12:00 |
14:47:08.13 |
-50:41:41.2 |
HIP 72313 |
20.62 |
| 2026-10-02 00:00 |
14:47:11.06 |
-50:41:35.8 |
HIP 72313 |
20.50 |
| 2026-10-02 12:00 |
14:47:14.01 |
-50:41:30.6 |
HIP 72313 |
20.39 |
| 2026-10-03 00:00 |
14:47:16.98 |
-50:41:25.5 |
HIP 72313 |
20.30 |
| 2026-10-03 12:00 |
14:47:19.97 |
-50:41:20.6 |
HIP 72313 |
20.22 |
| 2026-10-04 00:00 |
14:47:22.97 |
-50:41:16.0 |
HIP 72313 |
20.16 |
| 2026-10-04 12:00 |
14:47:25.98 |
-50:41:11.5 |
HIP 72313 |
20.11 |
| 2026-10-05 00:00 |
14:47:29.02 |
-50:41:07.1 |
HIP 72313 |
20.08 |
| 2026-10-05 12:00 |
14:47:32.06 |
-50:41:03.0 |
HIP 72313 |
20.06 |
| 2026-10-06 00:00 |
14:47:35.13 |
-50:40:59.0 |
HIP 72313 |
20.06 |
| 2026-10-06 12:00 |
14:47:38.21 |
-50:40:55.3 |
HIP 72313 |
20.07 |
| 2026-10-07 00:00 |
14:47:41.30 |
-50:40:51.7 |
HIP 72313 |
20.10 |
| 2026-10-07 12:00 |
14:47:44.41 |
-50:40:48.3 |
HIP 72313 |
20.14 |
| 2026-10-08 00:00 |
14:47:47.54 |
-50:40:45.0 |
HIP 72313 |
20.20 |
| 2026-10-08 12:00 |
14:47:50.68 |
-50:40:42.0 |
HIP 72313 |
20.28 |
| 2026-10-09 00:00 |
14:47:53.83 |
-50:40:39.1 |
HIP 72313 |
20.37 |
| 2026-10-09 12:00 |
14:47:57.00 |
-50:40:36.5 |
HIP 72313 |
20.47 |
| 2026-10-10 00:00 |
14:48:00.18 |
-50:40:34.0 |
HIP 72313 |
20.59 |
| 2026-10-10 12:00 |
14:48:03.38 |
-50:40:31.7 |
HIP 72313 |
20.73 |
| 2026-10-11 00:00 |
14:48:06.58 |
-50:40:29.5 |
HIP 72313 |
20.88 |