Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.277411E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-18T22:59:15+0800
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    1 Object 1

    Name TIROS 1
    AOE ID 29
    NORAD ID 29
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 39154
    NORAD ID 39154
    Object Type ROCKET BODY
    Country
    CN CN

    Conjunction Constraints

    Parameter TIROS 1 CZ-2D R/B
    Time of Closest Approach 2026-10-19T06:29:49+0000
    Collision Probability (Pc) 1.277411E-6
    Conjunction Distance (km) 2.913 km
    Relative Speed (km/s) 12.794 km/s
    Conjunction Risk Parameters R (Radial): -2.552 | I (In-track): 0.758 | C (Cross-track): 1.181
    Collision Risk Index (CRI) 0.37
    X Position (km) -615.569 -614.255
    Position Y (km) -4729.386 -4727.08
    Position Z (km) 5109.797 5108.598
    Velocity X (km/s) 7.138 -0.919
    Velocity Y (km/s) -2.202 5.563
    Velocity Z (km/s) -1.168 5.034

    Orbital Parameters 国际轨道数据源

    Parameter TIROS 1 CZ-2D R/B
    Semimajor Axis (a) 7010.925 km 7001.922 km
    Eccentricity (e) 0.002174 0.001750
    Inclination (i) 48.3769° 98.4494°
    RAAN 160.7550° 270.4718°
    Perigee Argument 77.9060° 21.6091°
    Mean Anomaly (M) 282.4288° 338.5855°
    Apogee 648.028 km 636.041 km
    Perigee 617.548 km 611.529 km
    Orbit Epoch 2026-10-18T00:51:09+0000 2026-10-18T01:06:41+0000

    TIROS 1 & CZ-2D R/B Collision Probability (Pc) Trend

    TIROS 1 & CZ-2D R/B Collision Probability (Pc) TrendNot Available

    TIROS 1 & CZ-2D R/B Miss Distance (Miss Distance) Trend

    TIROS 1 & CZ-2D R/B Miss Distance (Miss Distance) TrendNot Available

    TIROS 1Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    CZ-2D R/BMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    TIROS 1Collision Probability Trend

    Object 1 Probability TrendNot Available

    CZ-2D R/BCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with TIROS 1

    No nearby objects data