Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.710238E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-27T12:41:25+0800
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    1 Object 1

    AOE ID 1520
    NORAD ID 1520
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 69105
    NORAD ID 69105
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter CALSPHERE 4(A) QIANFAN-146
    Time of Closest Approach 2026-10-27T05:46:11+0000
    Collision Probability (Pc) 1.710238E-6
    Conjunction Distance (km) 2.383 km
    Relative Speed (km/s) 12.183 km/s
    Conjunction Risk Parameters R (Radial): -2.379 | I (In-track): 0.068 | C (Cross-track): -0.098
    Collision Risk Index (CRI) 0.4
    X Position (km) -87.271 -87.293
    Position Y (km) 115.564 115.418
    Position Z (km) 7438.732 7436.354
    Velocity X (km/s) 3.794 -7.234
    Velocity Y (km/s) -6.286 -1.112
    Velocity Z (km/s) 0.14 -0.068

    Orbital Parameters 国际轨道数据源

    Parameter CALSPHERE 4(A) QIANFAN-146
    Semimajor Axis (a) 7501.241 km 7446.617 km
    Eccentricity (e) 0.007151 0.000190
    Inclination (i) 89.8846° 89.0196°
    RAAN 121.1216° 8.7856°
    Perigee Argument 91.8213° 106.1199°
    Mean Anomaly (M) 16.7348° 254.0162°
    Apogee 1176.745 km 1069.898 km
    Perigee 1069.463 km 1067.062 km
    Orbit Epoch 2026-10-26T20:52:57+0000 2026-10-26T16:52:52+0000

    CALSPHERE 4(A) & QIANFAN-146 Collision Probability (Pc) Trend

    CALSPHERE 4(A) & QIANFAN-146 Collision Probability (Pc) TrendNot Available

    CALSPHERE 4(A) & QIANFAN-146 Miss Distance (Miss Distance) Trend

    CALSPHERE 4(A) & QIANFAN-146 Miss Distance (Miss Distance) TrendNot Available

    CALSPHERE 4(A)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    QIANFAN-146Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CALSPHERE 4(A)Collision Probability Trend

    Object 1 Probability TrendNot Available

    QIANFAN-146Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CALSPHERE 4(A)

    No nearby objects data