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18256 (4195 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2018256
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07816317275298164 3.8189e-08  
a 2.728679378545783 1.2811e-08 au
q 2.515397140893011 1.0403e-07 au
i 3.436124059226715 4.0251e-06 deg
node 130.8696857042412 6.2438e-05 deg
peri 193.8943839281738 6.7007e-05 deg
M 164.3398084377042 2.5012e-05 deg
tp 2458248.933410165204
(2018-May-10.43341017)
0.00011439 TDB
period 1646.369038108551
4.51
1.1595e-05
3.175e-08
d
yr
n .2186630042639711 1.54e-09 deg/d
Q 2.941961616198556 1.3813e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1403  
   data-arc span      16937 days (46.37 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52672  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:22:15  

Additional Information
 Earth MOID = 1.50331 au 
 Jupiter MOID = 2.29471 au 
 T_jup = 3.348 
[ 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 14.5   n/a MPO319313  

18256 (4195 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ 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
2027-Jul-10 18:12 < 00:01 Amphi 0.0116122064761108 0.0116102037657229 0.0116142096742104 3.44933785247338 3.44933770895003 2461597.258588369 0.725957878942756 160.852525525014 34.0209920131151 53.3559333492958 41442.2473056241 T 30 CATAB v2.0f-lin.ifort 2020-Feb-22 22:22:29 2020-Feb-22 22:22
2146-Apr-25 19:20 00:14 Psych 0.0498920676684092 0.0498842034293635 0.0498999362279292 1.58683733078692 1.58683717796372 2504985.305543947 14.2548709995871 829.73989045489 53.9471109839998 62.330695194477 121909.946481387 T 30 CATAB v2.0f-lin.ifort 2020-Feb-22 22:22:29 2020-Feb-22 22:22

Alternate Designations
 4195 T-2 = 1999 JW122 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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