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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1276147108622364 3.3832e-08  
a 3.219382708835711 1.7411e-08 au
q 2.808542115292759 1.104e-07 au
i 2.933392025409896 3.5692e-06 deg
node 99.33580200079196 7.4263e-05 deg
peri 11.36875891133599 7.6101e-05 deg
M 261.0125990254264 1.9153e-05 deg
tp 2459976.642601812957
(2023-Feb-01.14260181)
0.0001144 TDB
period 2109.877970291501
5.78
1.7116e-05
4.686e-08
d
yr
n .1706259817245555 1.3842e-09 deg/d
Q 3.630223302378664 1.9633e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1763  
   data-arc span      22665 days (62.05 yr)  
   first obs. used      1958-12-03  
   last obs. used      2020-12-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51649  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:56:34  

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 13.01   n/a MPCxxxxx  
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

[ 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
1964-Jan-12 22:57 00:02 Jupiter 1.99765548297812 1.99765438125376 1.99765658470294 4.04168987728491 3.93538313996665 2438407.456351719 1.82880014659288 78.6082819706867 19.928065615492 56.5731418615182 2714331.38623174 T 32 CATAB v2.0f-lin.ifort 2021-Apr-12 15:56:53 2021-Apr-12 15:56
1975-Jan-31 22:01 00:02 Jupiter 1.77118913142448 1.7711881747388 1.77119008811036 2.81701035233196 2.64179906621554 2442444.417514774 1.55106103663959 71.2727393575695 12.6022039957081 71.9846504469149 2153829.18906247 T 32 CATAB v2.0f-lin.ifort 2021-Apr-12 15:56:53 2021-Apr-12 15:56
1986-Mar-12 22:21 00:01 Jupiter 1.59919616288421 1.59919551959995 1.5991968061682 1.97167850251377 1.68172702385377 2446502.430906231 1.11781139268138 64.0447640267973 21.6384691179382 -83.8625332315019 1796117.64126754 T 32 CATAB v2.0f-lin.ifort 2021-Apr-12 15:56:53 2021-Apr-12 15:56
1997-May-26 04:29 < 00:01 Jupiter 1.5192659423492 1.51926553788584 1.51926634681213 1.59262321705224 1.19222771200399 2450594.686846075 0.653432929453942 84.5103534747661 72.0804759808693 49.3783445545106 2090080.34175958 T 32 CATAB v2.0f-lin.ifort 2021-Apr-12 15:56:53 2021-Apr-12 15:56
2008-Aug-27 08:03 < 00:01 Jupiter 1.53260716726354 1.53260684212266 1.53260749240408 1.54537110427644 1.1326236828159 2454705.835674013 0.28774764534723 91.2676944043347 69.1461867229084 44.3473564596446 2455870.0108997 T 32 CATAB v2.0f-lin.ifort 2021-Apr-12 15:56:53 2021-Apr-12 15:56
2019-Nov-24 14:26 < 00:01 Jupiter 1.63914603459237 1.6391457231876 1.63914634599697 1.77998484600573 1.46111382844216 2458812.101383479 0.229041136811793 63.1323248841247 27.093948502327 84.0058877400811 2979090.72843085 T 32 CATAB v2.0f-lin.ifort 2021-Apr-12 15:56:53 2021-Apr-12 15:56
2031-Jan-31 04:17 < 00:01 Jupiter 1.82139220598656 1.82139182898395 1.82139258298907 2.30941771825175 2.09841075439757 2462897.678328298 0.47359909812057 49.6887992618777 7.87054730986851 88.0151148197483 3518610.34336129 T 32 CATAB v2.0f-lin.ifort 2021-Apr-12 15:56:53 2021-Apr-12 15:56
2142-Jan-09 03:46 00:02 Jupiter 1.90182284872241 1.90182162844996 1.90182406899551 3.51213408898527 3.38294809214154 2503417.656711631 2.33380219500431 89.2312041814999 20.2640715428818 61.1422048813168 2290747.60373665 T 32 CATAB v2.0f-lin.ifort 2021-Apr-12 15:56:53 2021-Apr-12 15:56
2153-Feb-03 06:26 00:02 Jupiter 1.67766830447 1.67766720972209 1.67766939921848 2.38455051224488 2.16247995387011 2507460.768140699 2.42147655898079 102.195046377023 4.29341210054634 85.4056035036438 1818411.36362205 T 32 CATAB v2.0f-lin.ifort 2021-Apr-12 15:56:53 2021-Apr-12 15:56
2164-Mar-28 23:01 00:02 Jupiter 1.53167885783594 1.53167817698694 1.53167953868519 1.71610215598694 1.35609780347656 2511532.458750080 2.42713069902396 142.453526362243 58.5719229467684 -65.8976705364765 1641861.25777901 T 32 CATAB v2.0f-lin.ifort 2021-Apr-12 15:56:53 2021-Apr-12 15:56
2175-Jun-23 15:36 00:03 Jupiter 1.48601925032716 1.48601887031196 1.48601963034228 1.48733857138552 1.03546482999204 2515636.149687598 2.56549690462304 184.171758133284 119.720566637788 -88.5801407549258 2180743.29125474 T 32 CATAB v2.0f-lin.ifort 2021-Apr-12 15:56:53 2021-Apr-12 15:56
2186-Sep-25 10:36 00:03 Jupiter 1.53740984113426 1.53740890572915 1.53741077653972 1.57176669862447 1.16985812813077 2519747.941827965 2.97667921589783 152.685401728462 57.6403728169824 59.428169027705 2198417.41546923 T 32 CATAB v2.0f-lin.ifort 2021-Apr-12 15:56:53 2021-Apr-12 15:56
2197-Dec-13 21:22 00:04 Jupiter 1.68412487921522 1.68412317776004 1.68412658066782 1.95903198281135 1.68282973743678 2523845.390096889 3.55541175380419 56.177449581641 12.5238248169598 84.7407070775167 887269.630292761 T 32 CATAB v2.0f-lin.ifort 2021-Apr-12 15:56:53 2021-Apr-12 15:56

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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