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1302 Werra (A924 SE)
Classification: Main-belt Asteroid          SPK-ID: 2001302
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1749679206575301 3.0548e-08  
a 3.112181150389393 1.2145e-08 au
q 2.567649285796201 9.3735e-08 au
i 2.595787447799137 3.496e-06 deg
node 90.13313764110494 9.0777e-05 deg
peri 354.2935925843668 9.1588e-05 deg
M 107.5604781516726 1.1713e-05 deg
tp 2458601.335667773454
(2019-Apr-27.83566777)
6.487e-05 TDB
period 2005.375611080827
5.49
1.1738e-05
3.214e-08
d
yr
n .1795174918906951 1.0508e-09 deg/d
Q 3.656713014982586 1.427e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3177  
   data-arc span      35176 days (96.31 yr)  
   first obs. used      1924-09-28  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42625  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:54:12  

Additional Information
 Earth MOID = 1.58347 au 
 Jupiter MOID = 1.57679 au 
 T_jup = 3.193 
[ 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 11.05   n/a E2021B10  
diameter diameter 35.041 km 0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.183 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.076   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1302 Werra (A924 SE)          Discovered 1924-Sep-28 by Reinmuth, K. at Heidelberg
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
1900-Aug-30 17:15 00:02 Jupiter 1.68925532823538 1.68925463088455 1.68925602558553 1.5827732166788 1.2256980305324 2415262.218918954 2.28587980406795 81.0132777223837 62.4980397112053 -75.7379143775241 1884557.77653077 T 37 CATAB v2.0f-lin.ifort 2021-Feb-24 00:54:19 2021-Feb-24 00:54
1962-Sep-24 10:11 00:01 Jupiter 1.85929624029008 1.85929561957215 1.85929686100801 2.95952249125227 2.80136604901505 2437931.924429149 1.06524948086595 54.6832992133507 13.68117644474 77.9276459842862 2433719.71176832 T 37 CATAB v2.0f-lin.ifort 2021-Feb-24 00:54:19 2021-Feb-24 00:54
1972-Nov-09 05:04 < 00:01 Jupiter 1.60231319689845 1.60231287628022 1.60231351751623 1.47887891992175 1.06293613713525 2441630.711109427 0.855283833382338 103.102117181079 91.86849921638 27.8528936126382 2349098.17633108 T 37 CATAB v2.0f-lin.ifort 2021-Feb-24 00:54:19 2021-Feb-24 00:54
1983-Jan-05 22:40 < 00:01 Jupiter 1.85772522367947 1.85772481367011 1.85772563368872 2.07806361407018 1.84565875586968 2445340.444408258 0.619982091338817 56.0102337613291 7.30017930181684 88.8743168446215 3023227.24065841 T 37 CATAB v2.0f-lin.ifort 2021-Feb-24 00:54:19 2021-Feb-24 00:54
2045-Jan-25 15:53 < 00:01 Jupiter 1.69280561100265 1.69280518203218 1.69280603997292 2.02550005135836 1.76122635926387 2468006.161997418 0.656672403211091 51.815850734544 13.111392291954 88.7787538614487 2325062.40576843 T 37 CATAB v2.0f-lin.ifort 2021-Feb-24 00:54:19 2021-Feb-24 00:54
2055-Mar-16 14:45 < 00:01 Jupiter 1.6591161312552 1.65911566758133 1.6591165949286 1.53348627488369 1.15348491081298 2471708.114480061 0.861403790083919 83.566085649449 72.9917323726848 66.2938885274911 2203872.15855685 T 37 CATAB v2.0f-lin.ifort 2021-Feb-24 00:54:19 2021-Feb-24 00:54
2117-Apr-13 08:10 00:02 Jupiter 1.89746192279828 1.89746084684536 1.89746299875205 3.20714069625485 3.06479300680361 2494380.840063426 2.05604969907644 95.9699479786856 16.5646601290629 70.9860004284197 2349758.09368129 T 37 CATAB v2.0f-lin.ifort 2021-Feb-24 00:54:19 2021-Feb-24 00:54
2127-May-29 06:46 00:02 Jupiter 1.59285258526371 1.59285225535245 1.59285291517469 1.50241460784527 1.09257520656705 2498078.781681233 2.32592185829705 148.028004342648 98.3252487693835 -62.0341594922731 2167984.18668357 T 37 CATAB v2.0f-lin.ifort 2021-Feb-24 00:54:19 2021-Feb-24 00:54
2137-Jul-22 19:16 00:03 Jupiter 1.81119688397633 1.81119552242754 1.8111982455245 1.95716348821613 1.70152018153445 2501786.302920767 2.51233775647323 96.7727639594497 13.0212721353852 -86.4653298959097 1596114.88636423 T 37 CATAB v2.0f-lin.ifort 2021-Feb-24 00:54:19 2021-Feb-24 00:54
2199-Aug-16 21:13 00:04 Jupiter 1.70680328669159 1.70680179624454 1.7068047771401 2.16428893824474 1.92135929745468 2524456.383824848 3.85899561036138 153.645158742165 10.1348935302171 -82.0820640672372 1674386.99577798 T 37 CATAB v2.0f-lin.ifort 2021-Feb-24 00:54:19 2021-Feb-24 00:54

Alternate Designations
 A924 SE = 1930 WD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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