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
$$
M_a = (8.588 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.588 |
| n |
6.000 |
| gf |
0.802 |
| gb |
-0.776 |
| k |
1.000 |
| δ90 |
1.149 |
| 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 |
+9.5605 |
-1.777 |
| 1999-06-07 |
1999-07-27 |
+9.4771 |
-1.595 |
| 1999-07-27 |
1999-08-14 |
+2.1422 |
-0.125 |
| 1999-08-14 |
1999-09-20 |
-2.6607 |
+0.207 |
| 1999-09-20 |
1999-10-26 |
+1.7248 |
+0.241 |
| 1999-10-26 |
1999-11-16 |
-22.4608 |
+1.445 |
| 1999-11-16 |
2000-02-28 |
+1.5087 |
-1.953 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
14:56:02.33 |
-52:11:30.8 |
HIP 73086 |
5.63 |
| 2026-03-26 12:00 |
14:55:59.48 |
-52:11:37.6 |
HIP 73086 |
5.66 |
| 2026-03-27 00:00 |
14:55:56.62 |
-52:11:44.3 |
HIP 73086 |
5.74 |
| 2026-03-27 12:00 |
14:55:53.73 |
-52:11:50.7 |
HIP 73086 |
5.85 |
| 2026-03-28 00:00 |
14:55:50.82 |
-52:11:57.0 |
HIP 73086 |
6.00 |
| 2026-03-28 12:00 |
14:55:47.89 |
-52:12:03.0 |
HIP 73086 |
6.19 |
| 2026-03-29 00:00 |
14:55:44.93 |
-52:12:08.9 |
HIP 73086 |
6.41 |
| 2026-03-29 12:00 |
14:55:41.96 |
-52:12:14.6 |
HIP 73086 |
6.65 |
| 2026-03-30 00:00 |
14:55:38.96 |
-52:12:20.0 |
HIP 73086 |
6.93 |
| 2026-03-30 12:00 |
14:55:35.95 |
-52:12:25.3 |
HIP 73086 |
7.23 |
| 2026-03-31 00:00 |
14:55:32.91 |
-52:12:30.4 |
HIP 73086 |
7.55 |
| 2026-03-31 12:00 |
14:55:29.86 |
-52:12:35.3 |
HIP 73086 |
7.89 |
| 2026-04-01 00:00 |
14:55:26.78 |
-52:12:40.0 |
HIP 73086 |
8.25 |
| 2026-04-01 12:00 |
14:55:23.69 |
-52:12:44.5 |
HIP 73086 |
8.62 |
| 2026-04-02 00:00 |
14:55:20.57 |
-52:12:48.8 |
HIP 73086 |
9.01 |
| 2026-04-02 12:00 |
14:55:17.44 |
-52:12:52.9 |
HIP 73086 |
9.41 |
| 2026-04-03 00:00 |
14:55:14.29 |
-52:12:56.8 |
HIP 73086 |
9.82 |
| 2026-04-03 12:00 |
14:55:11.11 |
-52:13:00.5 |
HIP 73086 |
10.24 |
| 2026-04-04 00:00 |
14:55:07.92 |
-52:13:04.1 |
HIP 73086 |
10.67 |
| 2026-04-04 12:00 |
14:55:04.72 |
-52:13:07.4 |
HIP 73086 |
11.11 |
| 2026-04-05 00:00 |
14:55:01.49 |
-52:13:10.5 |
HIP 73086 |
11.56 |
| 2026-04-05 12:00 |
14:54:58.25 |
-52:13:13.4 |
HIP 73086 |
12.02 |
| 2026-04-06 00:00 |
14:54:54.98 |
-52:13:16.1 |
HIP 73086 |
12.48 |
| 2026-04-06 12:00 |
14:54:51.71 |
-52:13:18.6 |
HIP 73086 |
12.95 |
| 2026-04-07 00:00 |
14:54:48.41 |
-52:13:21.0 |
HIP 73086 |
13.43 |
| 2026-04-07 12:00 |
14:54:45.10 |
-52:13:23.1 |
HIP 73086 |
13.91 |
| 2026-04-08 00:00 |
14:54:41.77 |
-52:13:25.0 |
HIP 73086 |
14.39 |
| 2026-04-08 12:00 |
14:54:38.43 |
-52:13:26.7 |
HIP 73086 |
14.88 |
| 2026-04-09 00:00 |
14:54:35.06 |
-52:13:28.2 |
HIP 73086 |
15.38 |
| 2026-04-09 12:00 |
14:54:31.69 |
-52:13:29.5 |
HIP 73086 |
15.88 |
| 2026-04-10 00:00 |
14:54:28.30 |
-52:13:30.6 |
HIP 73086 |
16.38 |
| 2026-04-10 12:00 |
14:54:24.89 |
-52:13:31.5 |
HIP 72785 |
16.49 |
| 2026-04-11 00:00 |
14:54:21.47 |
-52:13:32.2 |
HIP 72785 |
15.97 |
| 2026-04-11 12:00 |
14:54:18.03 |
-52:13:32.7 |
HIP 72785 |
15.45 |
| 2026-04-12 00:00 |
14:54:14.58 |
-52:13:33.0 |
HIP 72785 |
14.93 |
| 2026-04-12 12:00 |
14:54:11.12 |
-52:13:33.1 |
HIP 72785 |
14.42 |
| 2026-04-13 00:00 |
14:54:07.64 |
-52:13:33.0 |
HIP 72785 |
13.90 |
| 2026-04-13 12:00 |
14:54:04.14 |
-52:13:32.6 |
HIP 72785 |
13.38 |
| 2026-04-14 00:00 |
14:54:00.64 |
-52:13:32.1 |
HIP 72785 |
12.86 |
| 2026-04-14 12:00 |
14:53:57.12 |
-52:13:31.4 |
HIP 72785 |
12.34 |
| 2026-04-15 00:00 |
14:53:53.59 |
-52:13:30.4 |
HIP 72785 |
11.82 |
| 2026-04-15 12:00 |
14:53:50.05 |
-52:13:29.3 |
HIP 72785 |
11.30 |
| 2026-04-16 00:00 |
14:53:46.49 |
-52:13:27.9 |
HIP 72785 |
10.79 |