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JPL Small-Body Database Browser
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146489 (2001 SW2)
Classification: Main-belt Asteroid          SPK-ID: 2146489
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1898772287396926 3.9544e-08  
a 2.76258307694987 1.2902e-08 au
q 2.238031458135456 1.1243e-07 au
i 4.384381308790198 4.2981e-06 deg
node 41.48814481328467 5.7184e-05 deg
peri 318.7685594127091 5.836e-05 deg
M 310.0724871970459 1.0893e-05 deg
tp 2458833.099554418185
(2019-Dec-15.59955442)
5.1057e-05 TDB
period 1677.148227291466
4.59
1.1749e-05
3.217e-08
d
yr
n .2146500793083668 1.5038e-09 deg/d
Q 3.287134695764284 1.5352e-08 au
  Orbit Determination Parameters
   # obs. used (total)      672  
   data-arc span      6652 days (18.21 yr)  
   first obs. used      2001-08-16  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59612  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 12:59:24  

Additional Information
 Earth MOID = 1.23648 au 
 Jupiter MOID = 2.16652 au 
 T_jup = 3.310 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO359749  
diameter diameter 2.059 km 0.549 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.316   0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

146489 (2001 SW2)          Discovered 2001-Sep-17 by Yeung, W. K. Y. at Desert Eagle
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1931-Jul-13 00:18 00:06 Iris 0.0497792138644835 0.0497646723485832 0.0497937554248945 3.54450153168659 3.54450149910519 2426535.512596325 5.60433159113703 728.539616276582 50.0260509680257 5.90945400896599 18377.6900299721 T 17 CATAB v2.0f-lin.ifort 2019-Dec-04 12:59:35 2019-Dec-04 12:59
2000-Jul-11 21:51 < 00:01 Hygie 0.0457862243687097 0.0457842211528606 0.0457882276430987 4.61845110886483 4.61845092615107 2451737.410665220 0.709389839137765 148.84174947957 67.3358975203344 -56.3319010239306 88299.2920940642 T 17 CATAB v2.0f-lin.ifort 2019-Dec-04 12:59:35 2019-Dec-04 12:59
2132-Jul-17 15:44 00:03 Psych 0.0320769248494279 0.0320722766124759 0.0320815860380371 1.90046327272775 1.90046307425496 2499955.155636584 2.90151442461839 1061.06930821169 48.4944851364152 -77.6642166220184 96289.5099867404 T 17 CATAB v2.0f-lin.ifort 2019-Dec-04 12:59:35 2019-Dec-04 12:59
2156-Jun-01 19:49 00:10 Iris 0.0387053000513246 0.0386988711419122 0.0387117451854655 3.33575854861558 3.33575850409017 2508675.325877727 9.856762417791 1302.23397978198 46.8114435692542 -75.8918513727768 119871.790572442 T 17 CATAB v2.0f-lin.ifort 2019-Dec-04 12:59:35 2019-Dec-04 12:59
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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