메타데이터
| 항목 |
값 |
| Designation |
C/1968 Q1 (Bally-Clayton) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1968-08-20T20:17:35.787840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:19Z |
| Obs used |
52 |
| NEO |
- |
| M1 |
8.500 |
| K1 |
6.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1968-09-19.0000000 |
| e |
1.00000000 |
| q (au) |
1.771094 |
| a (au) |
- |
| i (deg) |
93.169377 |
| Ω (om, deg) |
319.395346 |
| ω (w, deg) |
26.864965 |
| M (ma, deg) |
- |
밝기
산란 + 전체 선형
$$
M_a = (7.709 + 5.798\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.709 |
| n |
5.798 |
| gf |
1.000 |
| gb |
-0.782 |
| 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) |
| 2026-05-12 00:00 |
09:09:49.36 |
+05:50:11.0 |
HIP 44917 |
18.07 |
| 2026-05-12 12:00 |
09:09:49.48 |
+05:50:13.9 |
HIP 44917 |
18.13 |
| 2026-05-13 00:00 |
09:09:49.61 |
+05:50:16.6 |
HIP 44917 |
18.18 |
| 2026-05-13 12:00 |
09:09:49.76 |
+05:50:19.3 |
HIP 44917 |
18.24 |
| 2026-05-14 00:00 |
09:09:49.91 |
+05:50:22.0 |
HIP 44917 |
18.30 |
| 2026-05-14 12:00 |
09:09:50.08 |
+05:50:24.6 |
HIP 44917 |
18.36 |
| 2026-05-15 00:00 |
09:09:50.26 |
+05:50:27.1 |
HIP 44917 |
18.42 |
| 2026-05-15 12:00 |
09:09:50.45 |
+05:50:29.6 |
HIP 44917 |
18.48 |
| 2026-05-16 00:00 |
09:09:50.65 |
+05:50:32.0 |
HIP 44917 |
18.55 |
| 2026-05-16 12:00 |
09:09:50.86 |
+05:50:34.4 |
HIP 44917 |
18.61 |
| 2026-05-17 00:00 |
09:09:51.09 |
+05:50:36.7 |
HIP 44917 |
18.68 |
| 2026-05-17 12:00 |
09:09:51.32 |
+05:50:38.9 |
HIP 44917 |
18.74 |
| 2026-05-18 00:00 |
09:09:51.57 |
+05:50:41.1 |
HIP 44917 |
18.81 |
| 2026-05-18 12:00 |
09:09:51.83 |
+05:50:43.3 |
HIP 44917 |
18.88 |
| 2026-05-19 00:00 |
09:09:52.10 |
+05:50:45.3 |
HIP 44917 |
18.95 |
| 2026-05-19 12:00 |
09:09:52.38 |
+05:50:47.3 |
HIP 44917 |
19.02 |
| 2026-05-20 00:00 |
09:09:52.67 |
+05:50:49.3 |
HIP 44917 |
19.09 |
| 2026-05-20 12:00 |
09:09:52.98 |
+05:50:51.2 |
HIP 44917 |
19.17 |
| 2026-05-21 00:00 |
09:09:53.29 |
+05:50:53.0 |
HIP 44917 |
19.24 |
| 2026-05-21 12:00 |
09:09:53.62 |
+05:50:54.8 |
HIP 44917 |
19.32 |
| 2026-05-22 00:00 |
09:09:53.96 |
+05:50:56.5 |
HIP 44917 |
19.39 |
| 2026-05-22 12:00 |
09:09:54.30 |
+05:50:58.2 |
HIP 44917 |
19.47 |
| 2026-05-23 00:00 |
09:09:54.66 |
+05:50:59.8 |
HIP 44917 |
19.55 |
| 2026-05-23 12:00 |
09:09:55.03 |
+05:51:01.3 |
HIP 44917 |
19.63 |
| 2026-05-24 00:00 |
09:09:55.42 |
+05:51:02.8 |
HIP 44917 |
19.71 |
| 2026-05-24 12:00 |
09:09:55.81 |
+05:51:04.2 |
HIP 44917 |
19.80 |
| 2026-05-25 00:00 |
09:09:56.21 |
+05:51:05.5 |
HIP 44917 |
19.88 |
| 2026-05-25 12:00 |
09:09:56.63 |
+05:51:06.8 |
HIP 44917 |
19.97 |
| 2026-05-26 00:00 |
09:09:57.05 |
+05:51:08.1 |
HIP 44917 |
20.05 |
| 2026-05-26 12:00 |
09:09:57.49 |
+05:51:09.2 |
HIP 44917 |
20.14 |
| 2026-05-27 00:00 |
09:09:57.93 |
+05:51:10.4 |
HIP 44917 |
20.23 |
| 2026-05-27 12:00 |
09:09:58.39 |
+05:51:11.4 |
HIP 44917 |
20.32 |
| 2026-05-28 00:00 |
09:09:58.86 |
+05:51:12.4 |
HIP 44917 |
20.42 |
| 2026-05-28 12:00 |
09:09:59.34 |
+05:51:13.3 |
HIP 44917 |
20.51 |
| 2026-05-29 00:00 |
09:09:59.83 |
+05:51:14.2 |
HIP 44917 |
20.60 |
| 2026-05-29 12:00 |
09:10:00.33 |
+05:51:15.0 |
HIP 44917 |
20.70 |
| 2026-05-30 00:00 |
09:10:00.84 |
+05:51:15.8 |
HIP 44917 |
20.80 |
| 2026-05-30 12:00 |
09:10:01.36 |
+05:51:16.5 |
HIP 44917 |
20.90 |
| 2026-05-31 00:00 |
09:10:01.89 |
+05:51:17.1 |
HIP 44917 |
21.00 |
| 2026-05-31 12:00 |
09:10:02.43 |
+05:51:17.7 |
HIP 44917 |
21.10 |
| 2026-06-01 00:00 |
09:10:02.98 |
+05:51:18.2 |
HIP 44917 |
21.20 |
| 2026-06-01 12:00 |
09:10:03.54 |
+05:51:18.6 |
HIP 44917 |
21.31 |
| 2026-06-02 00:00 |
09:10:04.11 |
+05:51:19.0 |
HIP 44917 |
21.42 |