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4098 Thraen (1987 WQ1)
Classification: Outer Main-belt Asteroid          SPK-ID: 2004098
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1276147108861125 3.3595e-08  
a 3.219382708820413 1.7318e-08 au
q 2.808542115202547 1.0982e-07 au
i 2.933391935846854 3.5518e-06 deg
node 99.33580189954424 7.4262e-05 deg
peri 11.36875902193569 7.6089e-05 deg
M 261.0125990145521 1.9062e-05 deg
tp 2459976.642601872553
(2023-Feb-01.14260187)
0.00011382 TDB
period 2109.877970276462
5.78
1.7024e-05
4.661e-08
d
yr
n .1706259817257717 1.3768e-09 deg/d
Q 3.63022330243828 1.9528e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1798  
   data-arc span      22894 days (62.68 yr)  
   first obs. used      1958-12-03  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51362  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:31:02  

Additional Information
 Earth MOID = 1.82563 au 
 Jupiter MOID = 1.48054 au 
 T_jup = 3.175 
[ 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 13.02   n/a MPO636125  
diameter diameter 13.854 km 2.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.064   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4098 Thraen (1987 WQ1)          Discovered 1987-Nov-26 by Borngen, F. at Tautenburg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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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
1964-Jan-12 22:57 00:02 Jupiter 1.99765548251478 1.99765438359701 1.99765658143301 4.04168995801112 3.93538322284854 2438407.456357882 1.82188424004467 78.355903778971 19.8670793717645 56.5394398980913 2722682.26015203 T 34 CATAB v2.0g-lin.ifort 2021-Aug-25 21:31:18 2021-Aug-25 21:31
1975-Jan-31 22:01 00:02 Jupiter 1.77118913078639 1.77118817794126 1.77119008363171 2.81701040362654 2.6417991208469 2442444.417519493 1.54469796429818 71.0592314598808 12.5751478420833 71.9991014469283 2162051.73999832 T 34 CATAB v2.0g-lin.ifort 2021-Aug-25 21:31:18 2021-Aug-25 21:31
1986-Mar-12 22:21 00:01 Jupiter 1.59919616234613 1.59919552319136 1.59919680150064 1.97167850401336 1.68172702550594 2446502.430906527 1.11289860142976 63.9534017161475 21.4945669476096 -83.9890880536047 1807422.84585635 T 34 CATAB v2.0g-lin.ifort 2021-Aug-25 21:31:18 2021-Aug-25 21:31
1997-May-26 04:29 < 00:01 Jupiter 1.51926594208111 1.51926554125369 1.51926634290801 1.59262322800078 1.19222772654695 2450594.686852654 0.650816623889802 84.3269247230576 71.5469275943348 50.5474037570666 2108565.99128488 T 34 CATAB v2.0g-lin.ifort 2021-Aug-25 21:31:18 2021-Aug-25 21:31
2008-Aug-27 08:03 < 00:01 Jupiter 1.53260716709686 1.53260684478785 1.53260748940552 1.54537111203048 1.13262369334257 2454705.835664646 0.287390082481612 90.9419144296766 68.7200221992876 44.8918773822235 2475837.34929497 T 34 CATAB v2.0g-lin.ifort 2021-Aug-25 21:31:18 2021-Aug-25 21:31
2019-Nov-24 14:26 < 00:01 Jupiter 1.63914603456216 1.63914572548573 1.63914634363832 1.77998487720234 1.46111386644054 2458812.101375852 0.228089977034191 62.9706415023811 26.9254587754708 84.0394188411655 3000917.51515988 T 34 CATAB v2.0g-lin.ifort 2021-Aug-25 21:31:18 2021-Aug-25 21:31
2031-Jan-31 04:17 < 00:01 Jupiter 1.82139220589005 1.82139183020522 1.82139258157477 2.30941769832852 2.09841073245919 2462897.678330529 0.471462856130553 49.5343029534475 7.86817379064622 88.0279304650935 3535435.66620952 T 34 CATAB v2.0g-lin.ifort 2021-Aug-25 21:31:18 2021-Aug-25 21:31
2142-Jan-09 03:46 00:02 Jupiter 1.90182284783284 1.90182162957603 1.90182406609019 3.51213413894755 3.38294814395018 2503417.656715278 2.32893945297753 88.9730612639879 20.2116323005484 61.100824831285 2295923.16106678 T 34 CATAB v2.0g-lin.ifort 2021-Aug-25 21:31:18 2021-Aug-25 21:31
2153-Feb-03 06:26 00:02 Jupiter 1.67766830324366 1.67766720917446 1.67766939731353 2.3845505393391 2.16247998357603 2507460.768142873 2.41641514745166 101.856984266284 4.29332465753392 85.4061906124972 1823242.48705974 T 34 CATAB v2.0g-lin.ifort 2021-Aug-25 21:31:18 2021-Aug-25 21:31
2164-Mar-28 23:01 00:02 Jupiter 1.53167885683181 1.53167817603296 1.531679537631 1.71610216219834 1.35609781106957 2511532.458750556 2.42144938488785 142.132640731171 58.335292091807 -65.7269085414797 1647062.29888683 T 34 CATAB v2.0g-lin.ifort 2021-Aug-25 21:31:18 2021-Aug-25 21:31
2175-Jun-23 15:36 00:03 Jupiter 1.48601925017432 1.48601887433744 1.48601962601102 1.48733856164387 1.03546481594254 2515636.149677038 2.55821443637267 183.657234572424 119.063376056987 -88.0760073091117 2195211.05012748 T 34 CATAB v2.0g-lin.ifort 2021-Aug-25 21:31:18 2021-Aug-25 21:31
2186-Sep-25 10:36 00:03 Jupiter 1.53740984238342 1.53740891359963 1.53741077116757 1.57176671261109 1.16985814730519 2519747.941820037 2.96701094175274 152.02272500017 57.1799773877767 59.7197250272763 2220829.74138189 T 34 CATAB v2.0g-lin.ifort 2021-Aug-25 21:31:18 2021-Aug-25 21:31
2197-Dec-13 21:22 00:04 Jupiter 1.68412488203229 1.68412318809509 1.68412657596701 1.95903201283685 1.68282977289027 2523845.390088886 3.54350996673378 56.106396584109 12.4270348849627 84.7898655458236 892219.279631845 T 34 CATAB v2.0g-lin.ifort 2021-Aug-25 21:31:18 2021-Aug-25 21:31

Alternate Designations
 1987 WQ1 = 1958 XZ = 1977 DP1 = 1981 WM8 = 1987 YB1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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