Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.088714E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T09:02:03+0800
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    1 Object 1

    AOE ID 46355
    NORAD ID 46355
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 56201
    NORAD ID 56201
    Object Type PAYLOAD
    Country
    AR AR

    Conjunction Constraints

    Parameter STARLINK-1661 NUSAT-39 (TIKVAH ALPER)
    Time of Closest Approach 2026-10-21T07:24:31+0000
    Collision Probability (Pc) 2.088714E-6
    Conjunction Distance (km) 2.289 km
    Relative Speed (km/s) 14.824 km/s
    Conjunction Risk Parameters R (Radial): 2.266 | I (In-track): 0.083 | C (Cross-track): -0.312
    Collision Risk Index (CRI) 0.41
    X Position (km) 6120.107 6122.018
    Position Y (km) 2933.551 2934.799
    Position Z (km) -110.996 -111.154
    Velocity X (km/s) -1.901 0.316
    Velocity Y (km/s) 4.186 -0.928
    Velocity Z (km/s) 6.135 -7.6

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-1661 NUSAT-39 (TIKVAH ALPER)
    Semimajor Axis (a) 6789.202 km 6785.637 km
    Eccentricity (e) 0.000273 0.000211
    Inclination (i) 53.1479° 97.3028°
    RAAN 35.9018° 204.2568°
    Perigee Argument 316.7105° 357.8902°
    Mean Anomaly (M) 43.3690° 2.2342°
    Apogee 412.922 km 408.932 km
    Perigee 409.208 km 406.068 km
    Orbit Epoch 2026-10-19T07:30:23+0000 2026-10-19T20:36:59+0000

    STARLINK-1661 & NUSAT-39 (TIKVAH ALPER) Collision Probability (Pc) Trend

    STARLINK-1661 & NUSAT-39 (TIKVAH ALPER) Collision Probability (Pc) TrendNot Available

    STARLINK-1661 & NUSAT-39 (TIKVAH ALPER) Miss Distance (Miss Distance) Trend

    STARLINK-1661 & NUSAT-39 (TIKVAH ALPER) Miss Distance (Miss Distance) TrendNot Available

    STARLINK-1661Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    NUSAT-39 (TIKVAH ALPER)Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-1661Collision Probability Trend

    Object 1 Probability TrendNot Available

    NUSAT-39 (TIKVAH ALPER)Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-1661

    No nearby objects data