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11885 Summanus (1990 SS)
Classification: Apollo [NEO]          SPK-ID: 2011885
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 66 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .474902212558776 3.8222e-08  
a 1.703268930647554 2.0658e-09 au
q .8943827469004103 6.5038e-08 au
i 19.4178968436447 1.5768e-05 deg
node 359.8579296603603 1.0463e-05 deg
peri 116.0804172080474 1.5872e-05 deg
M 70.10902977164258 7.3616e-06 deg
tp 2458842.377118524275
(2019-Dec-24.87711852)
1.6413e-05 TDB
period 811.9387405113617
2.22
1.4771e-06
4.044e-09
d
yr
n .443383203729472 8.0661e-10 deg/d
Q 2.512155114394699 3.0468e-09 au
  Orbit Determination Parameters
   # obs. used (total)      322  
   data-arc span      10827 days (29.64 yr)  
   first obs. used      1990-09-25  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45945  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-27 05:59:12  

Additional Information
 Earth MOID = .0670826 au 
 Jupiter MOID = 2.76277 au 
 T_jup = 4.005 
[ 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 18.5   n/a MPO196501  
diameter diameter 1.298 km 0.446 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2012ApJ...760L..12M)  
rotation period rot_per 7.368 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.J.; Pravec, P.; Koehn, B.W. (2019) Minor Plantet Bull. 46, 238-265.]
geometric albedo albedo 0.033   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2012ApJ...760L..12M)  

11885 Summanus           Discovered 1990 Sept. 25 by Spacewatch at Kitt Peak.
Summanus was the Etruscan or Roman deity responsible for nocturnal lightning and thunder, as Jupiter was in daytime. This was the first earth-approacher discovered automatically by software and (lightning-fast) electronic computer; J. V. Scotti used D. L. Rabinowitz's Moving Object Detection Program at the telescope.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100923/MPCPages.arcLast Updated: 2010-12-06

[ 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
1900-Feb-20 09:07 < 00:01 Earth 0.266056558523165 0.266055344755378 0.266057772290966 10.7171570061022 10.7162225094943 2415070.880145535 0.358903615191762 132.829364420133 60.5018504245137 -89.1616939228949 682858.403642096 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
1911-Apr-02 04:18 < 00:01 Earth 0.408498250066809 0.408497147948734 0.408499352185278 24.3067260588101 24.3064577109804 2419128.679255715 0.131201916946857 58.9796339219917 15.3660417564833 -22.0822961316622 1605118.75081662 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
1919-Nov-10 07:04 < 00:01 Earth 0.299117213006748 0.29911656904619 0.299117856969278 11.1802788281329 11.1794820566318 2422272.794576559 0.188331154462157 74.0910671469358 26.2583116169499 74.5264989244073 1062804.82092612 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
1931-Mar-28 18:23 < 00:01 Earth 0.314538967323704 0.314537854366041 0.314540080281903 21.8390505316498 21.8386626421675 2426429.265847716 0.123556561113378 59.5479315781424 16.1633692506115 -22.1250370516048 1195920.89252206 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
1939-Nov-08 19:31 < 00:01 Earth 0.287661260396268 0.287660666003548 0.28766185478925 13.3837750586304 13.3830829670306 2429576.313536757 0.160174019649048 72.8508449088678 29.0127594023249 -84.8034738965564 1146423.52294632 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
1951-Mar-24 08:52 < 00:01 Earth 0.226846510744685 0.226845374882711 0.226847646607627 19.5179308295685 19.5173290281957 2433729.869228686 0.118310906564336 61.6430637988181 16.5050776573436 -24.1795393907655 893575.473672707 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
1959-Nov-06 08:25 < 00:01 Earth 0.305839057132047 0.305838297665075 0.305839816600549 15.5142060667697 15.5136445047659 2436878.850811373 0.139018827252927 68.5871695740609 30.4099307419646 -68.4631590510061 1183014.83514642 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
1971-Mar-20 02:22 < 00:01 Earth 0.144700045004396 0.144699117783252 0.144700972227309 17.3846569504694 17.3835977191924 2441030.598331494 0.100237148467759 53.5288188980556 16.2525569595882 -31.9303478408555 721427.324413067 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
1979-Nov-03 22:08 < 00:01 Earth 0.340169825979633 0.340169047589784 0.340170604370061 17.478721443073 17.4782733043469 2444181.422452812 0.114917065298498 54.3608643653703 31.43825123762 -59.1171726339178 1275128.98792217 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
1991-Mar-17 14:35 < 00:01 Earth 0.102339000359203 0.102338447349575 0.102339553369761 16.2415084895533 16.2399053687243 2448333.107706589 0.0711652411571777 33.2983453035288 15.5645637558778 -39.351010319254 669068.532996313 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
1999-Nov-03 05:59 < 00:01 Earth 0.356287090594742 0.356286461233184 0.356287719956301 18.157899819185 18.1574879573219 2451485.749514092 0.102571732694452 33.6661354082182 31.3431952464959 -82.6037726979511 1514221.76200786 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2011-Mar-17 13:24 < 00:01 Earth 0.102062304290313 0.102061979057678 0.102062629522953 16.2204414358122 16.2188318806464 2455638.058355034 0.0483095304446537 16.4123821080187 13.6249484242441 15.9900406829189 913885.961712857 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2019-Nov-04 01:21 < 00:01 Earth 0.347076267783382 0.347075636070426 0.347076899496358 17.6594284530628 17.6589937265373 2458791.556419778 0.113209272479965 32.0344101309071 26.9925650583906 19.7362212205502 1460425.89572732 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2031-Mar-20 09:23 < 00:01 Earth 0.147586237256234 0.147585586589829 0.147586887923502 17.471520639403 17.470487286571 2462945.891067074 0.0742718296156028 38.37065492555 15.8679073863282 -35.8971364854133 881397.086358355 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2039-Nov-07 01:27 < 00:01 Earth 0.315908243316145 0.315907504153721 0.315908982478982 15.715636003883 15.715099309744 2466099.560586231 0.146434525275322 48.5143959483845 30.0966621270581 -56.0038075514646 1173338.22859894 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2051-Mar-24 15:01 < 00:01 Earth 0.225480383190126 0.225479299819438 0.225481466561711 19.4989821977532 19.498376161787 2470255.126000609 0.105711216614675 58.874511674943 16.4628555866884 -24.4595918771022 921962.842685013 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2059-Nov-10 01:50 < 00:01 Earth 0.297356694272018 0.297356060889765 0.297357327654864 13.4308550009284 13.4301878228577 2473407.576434592 0.17705190518752 64.6508270053543 29.3494826173271 -78.321038512128 1156528.39802742 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2071-Mar-29 07:58 < 00:01 Earth 0.320471413346095 0.320470107770668 0.320472718922087 21.9272976156282 21.9269184388739 2477564.832280014 0.124428954445805 68.709792194502 17.0933375636666 -19.2756527998066 1046771.91791162 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2079-Nov-12 01:28 < 00:01 Earth 0.304929792682883 0.304929197218609 0.304930388147903 11.3426672291217 11.341896836604 2480714.561350970 0.205674209542923 73.1189588419112 27.7474628950869 81.0111727228892 1078965.01203429 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2091-Apr-02 16:44 < 00:01 Earth 0.407013708676465 0.407012326221374 0.407015091131926 24.2138771676907 24.2136068083309 2484874.197239861 0.135600192209883 71.8185944770754 17.651890779503 -16.8163668881428 1185563.51866556 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2099-Nov-11 11:23 < 00:01 Earth 0.338935161284359 0.338934362382837 0.338935960189328 9.85730796819197 9.85651042359738 2488018.974353462 0.214261117672663 79.091764114082 24.4295116200248 65.2696557859475 924542.421543466 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2100-Feb-19 15:09 < 00:01 Earth 0.268298671361077 0.268297235594474 0.268300107129434 10.9284934456833 10.9275846806758 2488119.131574238 0.413780977716805 165.921215144756 69.7007437539348 -83.7606902641746 554108.800596994 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2111-Apr-07 19:17 < 00:01 Earth 0.49076930536806 0.490767986105225 0.490770624631147 26.4345003477339 26.4342949642363 2492183.303226986 0.137324970324675 68.3227364033205 18.2658563918332 -16.2702557776026 1409219.10514173 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2119-Nov-09 03:32 < 00:01 Earth 0.377605703633267 0.377604792611734 0.377606614658384 9.4444287973498 9.44368163445924 2495320.647143794 0.198532850437952 80.1723779533388 21.6450574757897 58.8425120753432 949014.39254536 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2120-Mar-01 03:41 < 00:01 Earth 0.199628577309465 0.199627227426762 0.199629927193473 11.4932370784321 11.4920757121244 2495433.653183068 0.193697794379488 72.7368338422375 26.0262948649729 23.9353485266812 736975.497620116 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2139-Nov-05 19:29 < 00:01 Earth 0.413251343131613 0.413250509526317 0.413252176739141 9.47123461305833 9.47055383257506 2502622.311609617 0.172753534563027 69.0194648741627 20.514157055947 56.7308262703459 1062813.52965244 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2140-Mar-05 20:30 < 00:01 Earth 0.144773774632119 0.144772756831982 0.144774792433302 12.2814336172945 12.279934968419 2502743.354477972 0.134065569258189 54.5421620910393 12.2398908495388 22.0672832713031 919322.562520396 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2159-Nov-05 07:03 < 00:01 Earth 0.41954702252744 0.419546365735323 0.419547679320607 9.50986074194028 9.50919290135846 2509926.793458140 0.17167770593575 53.5991039351524 20.365934769686 58.8545327473694 1067318.7172172 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2160-Mar-06 18:32 < 00:01 Earth 0.133638181942145 0.133637612874301 0.133638751010126 12.4582975659229 12.4566970831811 2510049.272067446 0.108222908895045 29.3023984563948 10.11668377821 15.3928164790234 962178.325395045 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2179-Nov-06 22:57 < 00:01 Earth 0.404771731020011 0.404771055618709 0.404772406422555 9.43282475587221 9.43212688273416 2517233.456545083 0.225255186271727 56.134008133098 20.8064920609653 59.4851796797837 970067.804354324 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2180-Mar-04 18:57 < 00:01 Earth 0.157078741571456 0.157078198159086 0.157079284983968 12.0992267213005 12.0978246745597 2517352.289467467 0.142081155111035 28.4474903315755 14.1023266941477 20.4902966818467 1360743.53648697 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2199-Nov-10 16:19 < 00:01 Earth 0.374231791652188 0.374230900789395 0.374232682518065 9.39848187609123 9.39772429090548 2524542.179955722 0.294417336388267 76.586220213125 22.7616026580433 58.5638272575149 898398.731607244 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
2200-Mar-01 03:24 < 00:01 Earth 0.206140690514327 0.206139603429738 0.206141777598915 11.4721039439087 11.4709771956777 2524652.641408333 0.277009183382932 54.2154707626578 31.405750395647 0.756893187972316 690408.94900709 T 66 CATAB v2.0f-lin.ifort 2020-Jun-27 05:59:24 2020-Jun-27 05:59
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