Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.65385E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-23T00:31:39+0800
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    1 Object 1

    AOE ID 12185
    NORAD ID 12185
    Object Type DEBRIS
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 54700
    NORAD ID 54700
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter DELTA 1 DEB SHIYAN 20B (SY-20B)
    Time of Closest Approach 2026-10-24T11:19:29+0000
    Collision Probability (Pc) 1.65385E-6
    Conjunction Distance (km) 2.476 km
    Relative Speed (km/s) 12.995 km/s
    Conjunction Risk Parameters R (Radial): -1.887 | I (In-track): 0.79 | C (Cross-track): 1.394
    Collision Risk Index (CRI) 0.39
    X Position (km) -534.356 -535.133
    Position Y (km) 3649.569 3647.447
    Position Z (km) -6160.355 -6159.345
    Velocity X (km/s) 3.199 -7.384
    Velocity Y (km/s) -5.704 0.369
    Velocity Z (km/s) -3.597 0.874

    Orbital Parameters 国际轨道数据源

    Parameter DELTA 1 DEB SHIYAN 20B (SY-20B)
    Semimajor Axis (a) 7212.329 km 7171.290 km
    Eccentricity (e) 0.008875 0.001626
    Inclination (i) 99.2621° 59.9962°
    RAAN 291.8192° 180.5729°
    Perigee Argument 299.2362° 12.3939°
    Mean Anomaly (M) 73.7751° 347.7493°
    Apogee 898.201 km 804.817 km
    Perigee 770.183 km 781.489 km
    Orbit Epoch 2026-10-22T05:43:53+0000 2026-10-22T05:59:40+0000

    DELTA 1 DEB & SHIYAN 20B (SY-20B) Collision Probability (Pc) Trend

    DELTA 1 DEB & SHIYAN 20B (SY-20B) Collision Probability (Pc) TrendNot Available

    DELTA 1 DEB & SHIYAN 20B (SY-20B) Miss Distance (Miss Distance) Trend

    DELTA 1 DEB & SHIYAN 20B (SY-20B) Miss Distance (Miss Distance) TrendNot Available

    DELTA 1 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    SHIYAN 20B (SY-20B)Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    DELTA 1 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    SHIYAN 20B (SY-20B)Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with DELTA 1 DEB

    No nearby objects data