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18477 (1995 WA11)
Classification: Main-belt Asteroid          SPK-ID: 2018477
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2171137661034154 4.005e-08  
a 3.163156057859723 2.1713e-08 au
q 2.476391333364966 1.3489e-07 au
i 10.45718943401341 4.7226e-06 deg
node 54.74129705968046 2.6079e-05 deg
peri 259.1078300237691 2.8366e-05 deg
M 269.6196794771943 1.2852e-05 deg
tp 2459912.382423691936
(2022-Nov-28.88242369)
7.4956e-05 TDB
period 2054.846358751678
5.63
2.1158e-05
5.793e-08
d
yr
n .1751955801788999 1.8039e-09 deg/d
Q 3.849920782354481 2.6428e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1213  
   data-arc span      9338 days (25.57 yr)  
   first obs. used      1995-11-14  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53612  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:00:52  

Additional Information
 Earth MOID = 1.48875 au 
 Jupiter MOID = 1.59888 au 
 T_jup = 3.142 
[ 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 14.15   n/a E2021B10  
diameter diameter 10.900 km 0.090 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18477 (1995 WA11)          Discovered 1995-Nov-16 by Spacewatch at Kitt Peak
Reference: 20001111/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
1907-Mar-04 05:01 00:03 Jupiter 1.55129661575436 1.55129606647035 1.55129716504243 1.94724607764085 1.64309114685574 2417638.708954854 3.21951500723145 184.31879543784 103.90309822014 -49.6832705796436 794729.115137834 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 18:00:55 2021-Jul-08 18:00
1917-Oct-07 17:25 00:03 Jupiter 1.73812635428797 1.73812467579758 1.73812803278053 3.32015832691537 3.16998623404212 2421509.225588040 2.82733473684219 150.309017999091 32.6163384203866 -67.7094395134897 1346933.36592602 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 18:00:55 2021-Jul-08 18:00
1992-Aug-09 08:45 < 00:01 Jupiter 1.97793756287034 1.97793678066081 1.97793834507954 2.41980018465764 2.23583597567053 2448843.864415191 0.940852851676642 158.050234209035 17.1725251440494 85.0249937041014 1337277.91022743 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 18:00:55 2021-Jul-08 18:00
2003-Jan-22 04:01 < 00:01 Jupiter 1.66309502867123 1.66309434891384 1.66309570842888 0.869189126409088 n/a 2452661.667520545 0.607140508899259 53.475095096401 20.2981140885601 56.7200319789699 10556710.3443491 F 30 CATAB v2.0g-lin.ifort 2021-Jul-08 18:00:55 2021-Jul-08 18:00
2013-Aug-01 13:00 < 00:01 Jupiter 1.59041388730036 1.59041335582979 1.59041441877319 2.28278884278605 2.03616429785035 2456506.041750202 0.289903637495079 114.815876690839 23.7375761137765 -83.9775591497901 2158841.23138233 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 18:00:55 2021-Jul-08 18:00
2024-Mar-03 07:29 < 00:01 Jupiter 1.89075520373115 1.89075455300091 1.89075585446182 3.9439936581933 3.82872352953838 2460372.812007021 0.413796288346475 78.0482138541891 22.5048671655182 -75.9652415888828 2664355.52721434 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 18:00:55 2021-Jul-08 18:00
2099-Jan-06 14:01 00:03 Jupiter 1.84662683336689 1.84662556364408 1.84662810308581 1.79367100954465 1.51653651530839 2487710.083783568 2.50270467110344 201.039055152575 153.04373980128 73.0740570364837 538192.048099053 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 18:00:55 2021-Jul-08 18:00
2109-Jun-21 23:09 00:03 Jupiter 1.61087568520385 1.61087483813307 1.61087653233525 1.03119944011187 0.108362325821112 2491528.464475268 2.9679418548585 402666.97635168 1552.26191832746 0.867852089865951 2267809.61369003 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 18:00:55 2021-Jul-08 18:00
2120-Jan-04 05:03 00:03 Jupiter 1.67837021589048 1.67836904036242 1.67837139141758 2.7274081176978 2.53562925887262 2495376.710091942 3.14745306890136 101.697789535466 21.6221991867137 -85.0673510512718 827436.891701773 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 18:00:55 2021-Jul-08 18:00

Alternate Designations
 1995 WA11 = 1999 JK45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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