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5660 (1974 MA)
Classification: Apollo [NEO]          SPK-ID: 2005660
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 70 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7620476628951327 1.0629e-07  
a 1.785066492630727 4.1062e-09 au
q .4247607438090699 1.8975e-07 au
i 38.13203828287903 3.4114e-05 deg
node 302.1538244429611 1.4879e-05 deg
peri 127.0278087047309 2.0644e-05 deg
M 139.6371205490899 8.734e-06 deg
tp 2458862.607612351600
(2020-Jan-14.10761235)
2.0161e-05 TDB
period 871.1240898917023
2.39
3.0057e-06
8.229e-09
d
yr
n .4132591489287766 1.4259e-09 deg/d
Q 3.145372241452384 7.2353e-09 au
  Orbit Determination Parameters
   # obs. used (total)      272  
   # delay obs. used      1  
   # Doppler obs. used      1  
   data-arc span      16737 days (45.82 yr)  
   first obs. used      1974-06-26  
   last obs. used      2020-04-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45851  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 17:48:25  

Additional Information
 Earth MOID = .161631 au 
 Jupiter MOID = 2.8376 au 
 T_jup = 3.512 
[ 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 15.49   n/a E2021B10  
rotation period rot_per 17.5 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2005) http://www.asu.cas.cz/~ppravec/neo.htm]
SMASSII spectral type spec_B Q   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

5660 (1974 MA)          Discovered 1974-Jun-26 by Kowal, C. T. at Palomar
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
1900-Jul-23 19:12 < 00:01 Earth 0.315585360600746 0.315580080063631 0.315590641169235 37.2393752554925 37.2391485330856 2415224.300100528 0.373703179076078 306.772423639591 20.5854930549633 -30.9452489053755 1155391.59179047 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
1903-Feb-22 16:53 < 00:01 Earth 0.397912129583619 0.397910911205318 0.397913348004083 33.707371916081 33.7071732601363 2416168.203787451 0.638638980447353 321.268648594786 46.3043823683236 82.8927867578407 1215751.12157448 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
1915-Jan-22 22:59 < 00:01 Earth 0.455296169084193 0.455293923621617 0.455298414635695 32.5144462898719 32.5142663020173 2420520.457444509 0.706228159204078 362.409985473843 43.7350566169438 -73.3501086443715 1356713.61601073 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
1919-Aug-14 07:32 < 00:01 Earth 0.325365026527056 0.325360300509084 0.325369752574934 23.288617986236 23.2882663439864 2422184.813993635 0.159367622383698 282.679515547167 20.4795272951594 33.6193258355991 1423474.1836598 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
1931-Aug-02 09:55 < 00:01 Earth 0.165299434464932 0.165297498712244 0.165301370317886 31.5860251470499 31.5855148189049 2426555.913325304 0.242714209357314 228.016702512557 17.8663019318557 -65.3348850056852 1232107.06525418 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
1934-Mar-10 00:39 < 00:01 Earth 0.466223985096052 0.466221650989396 0.466226319235145 37.344012215677 37.3438591782491 2427506.527295163 0.401346449909247 237.742352219153 41.0574832799541 62.2838276496821 1448590.19462995 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
1943-Jul-17 17:05 < 00:01 Earth 0.459559391051018 0.459556114792816 0.459562667314341 41.5646743097361 41.5645348184564 2430923.211792496 0.232467864994247 180.731486271845 23.4567063848898 -25.5482362680669 1272343.3251433 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
1946-Feb-10 04:48 < 00:01 Earth 0.399504020264782 0.399502858371483 0.399505182175725 32.5157576129877 32.5155524973861 2431861.700106450 0.437061122724778 221.701982340207 45.5179103342488 -80.4903383304807 1210899.4543321 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
1962-Aug-09 03:00 < 00:01 Earth 0.191749894643794 0.191748183767987 0.19175160554489 26.8940085879818 26.8934919029797 2437885.624736013 0.121221050788135 140.815227928228 16.8639119132491 53.2573324017009 1381105.41270092 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
1974-Jul-25 18:49 < 00:01 Earth 0.296510978779554 0.296509360262477 0.296512597301485 36.3071071813435 36.3068596778055 2442254.283820375 0.117695815930618 101.650555411654 20.4278401736205 -38.3600814280881 1348926.4484187 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
1977-Feb-25 03:39 < 00:01 Earth 0.408652452807157 0.40865163826719 0.408653267348401 34.5266895429703 34.5265006984033 2443199.651906257 0.226579749942262 142.882496788228 39.1746513908712 85.5213675903994 1465005.68628166 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
1989-Jan-24 20:11 < 00:01 Earth 0.443614033229735 0.443612750119003 0.443615316347881 32.6234811000836 32.6232969898176 2447551.341161584 0.206031385008694 131.858849461976 39.6317106715109 -66.4582467991038 1398265.75329261 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
1993-Aug-13 18:56 < 00:01 Earth 0.337352150704665 0.33735126442701 0.33735303698278 23.1728158156194 23.1724749734994 2449213.288835164 0.0513748079519935 49.6201380294658 21.0197714853933 30.1257217665381 1596517.76484126 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2005-Jul-31 23:55 < 00:01 Earth 0.187395516790847 0.187395225584047 0.187395807997658 32.1746992413819 32.1742573234274 2453583.496463396 0.0375279252551009 29.3152126107023 14.4980466706883 -88.1553743034286 1889121.56678185 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2008-Mar-07 23:54 < 00:01 Earth 0.465392127925188 0.465391423823352 0.465392832030066 37.266895373997 37.2667417457748 2454533.495683242 0.120646869598587 105.236223067844 28.113631830506 78.0300450637619 2259265.06462959 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2020-Feb-05 20:01 < 00:01 Earth 0.409057490457456 0.409056364160713 0.409058616759267 32.661149560481 32.6609501270932 2458885.333894699 0.176639553481101 109.958774470438 36.4459181689579 -65.6753483513349 1411139.70347802 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2024-Aug-15 00:06 < 00:01 Earth 0.443494314730663 0.443493187774456 0.443495441687576 21.4014443288431 21.4011636019207 2460537.504332921 0.054960894223252 64.6145445695122 27.0410028590422 32.9154168222266 1791440.04735557 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2036-Aug-04 02:01 < 00:01 Earth 0.16489429738052 0.164893929456544 0.164894665306033 29.898085062031 29.897544597407 2464909.583947198 0.105562480981693 96.2665498908722 17.6901184177012 -87.0533895764246 1366711.86274793 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2048-Jul-17 10:09 < 00:01 Earth 0.45876884188579 0.458766574799025 0.458771108974981 41.2576274024814 41.257486630918 2469274.922970434 0.166420082768824 125.223234162007 24.6903974213813 -26.0205959870279 1275967.69705284 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2051-Feb-10 17:08 < 00:01 Earth 0.400299883533644 0.40029885391415 0.400300913163037 33.006083493409 33.0058818266931 2470213.214086309 0.352582680779535 173.155952325393 41.0753306359291 -79.4479839590949 1341141.2564019 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2055-Aug-15 20:06 < 00:01 Earth 0.495875268313164 0.49587244164303 0.49587809498995 20.814797257092 20.8145391081102 2471860.337705358 0.0517934452218887 168.660079317729 30.3092913281884 33.9324590431799 1622140.88583183 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2067-Aug-05 21:05 < 00:01 Earth 0.172502112681488 0.172501583695797 0.172502641716922 29.1856418449159 29.1851126049565 2476233.378718480 0.1965773940635 196.347514882831 17.4257749072048 84.1877077174098 1453241.77153111 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2079-Jul-18 09:59 < 00:01 Earth 0.458268357815769 0.458264365750914 0.45827234988896 41.1132119620285 41.1130705417054 2480597.915815024 0.292306449747468 221.944484474659 24.2276067193069 -26.4129857044871 1249543.58926299 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2082-Feb-10 03:34 < 00:01 Earth 0.400700047324171 0.400698975277782 0.400701119396504 33.1493389875096 33.1491383928327 2481535.648621813 0.581228589870007 268.942772022292 42.3563809013112 -82.9457864256985 1321519.59152507 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2086-Aug-15 09:06 < 00:01 Earth 0.483036567967616 0.483031893635566 0.483041242320259 21.0130961406471 21.0128336311548 2483182.879327115 0.0569586903901551 281.90425761993 29.6520200783594 34.4413323384629 1597262.07074819 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2098-Aug-04 06:08 < 00:01 Earth 0.178378344093614 0.178377579015841 0.178379109334746 30.0914598311249 30.0909634325183 2487554.755264580 0.312419146024356 306.025148900904 17.6545256459875 -83.6437013225276 1472739.96000648 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2113-Feb-06 03:25 < 00:01 Earth 0.407018569470719 0.407016984745443 0.407020154300179 33.0271511896558 33.026952978396 2492853.642535127 0.863858295438105 393.244136013828 42.5146204103807 -80.1889381490732 1322522.36998124 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2117-Aug-15 10:40 < 00:01 Earth 0.418850421632781 0.41884381474028 0.418857028579685 21.9801754295586 21.9798860118473 2494504.944302838 0.126472593497245 406.919403060723 26.4689462886599 36.0262965829722 1579612.78433172 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2129-Aug-01 17:29 < 00:01 Earth 0.213092428313218 0.213088325236108 0.21309653164436 32.2557993433806 32.2554116939599 2498874.228219567 0.459531307164259 421.391362542935 18.416916354983 -61.0499939815089 1472988.93786605 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2132-Mar-07 17:59 < 00:01 Earth 0.473250580386147 0.473246578060227 0.473254582825725 37.5605949972146 37.5604451013661 2499823.249070288 0.834174559683661 422.624494607692 37.9536319880416 62.2569475736543 1595673.69605857 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2144-Jan-29 18:16 00:01 Earth 0.425226216040173 0.425223488271911 0.425228944032575 33.0679207118554 33.067731221687 2504168.261155501 1.14167445011948 529.069764430912 41.5641881534975 -75.7844299520539 1374320.6062479 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2148-Aug-13 07:53 < 00:01 Earth 0.326311270304729 0.326303585499155 0.326318955249361 23.7957440764426 23.7954009263464 2505825.828751420 0.283355722576298 509.961747323219 21.8907793707794 41.329231607028 1599793.54558573 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2160-Jul-27 19:13 < 00:01 Earth 0.294522165407587 0.294514851154274 0.294529479812997 35.3432718217726 35.3430158516987 2510192.300599291 0.580886729127317 494.732919026844 20.0146553216965 -42.5466187239043 1440912.34170707 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2163-Feb-28 15:29 00:01 Earth 0.432065792456066 0.432062464274133 0.432069120835487 35.8869640553888 35.8867922143881 2511138.144953818 1.05016684341194 502.390666446303 39.423314709875 71.222632879022 1495201.20324539 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2165-Apr-03 19:17 < 00:01 Mars 0.0822616427712037 0.082255768878092 0.0822675171535361 26.0507961391476 26.0506625445403 2511903.303336072 0.509068624219337 432.000630032082 25.2814365975308 -47.4150568057481 358923.840676958 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2175-Jan-19 20:32 00:01 Earth 0.454612884113658 0.454609035188192 0.454616733361035 33.384597149547 33.3844215895281 2515481.355273991 1.32237628025713 645.656437415433 39.5392410449465 -73.0554123025871 1500309.4940857 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2179-Aug-11 02:59 < 00:01 Earth 0.245644641797743 0.245638356304254 0.245650927631167 26.0970775421627 26.0966619028253 2517145.624044037 0.427944567018356 553.752125935419 18.7786554189748 55.5737530288402 1670268.52445984 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2191-Jul-24 01:04 < 00:01 Earth 0.387061800579458 0.387053072618993 0.387070528627754 38.2463508114621 38.2461708236649 2521510.544348599 0.650390581580859 523.6013891528 21.4943743898688 -33.8078793653434 1449606.41227254 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2194-Feb-20 05:18 00:01 Earth 0.405565579527601 0.405563811638617 0.405567347648043 34.5671826436669 34.5669925846506 2522452.720595820 1.20727515003791 549.840561456023 40.1627300123603 81.7715759115061 1432328.77635948 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48
2200-Dec-31 12:35 < 00:01 Mars 0.0688366990129455 0.0688361191419047 0.0688372789124958 25.1707088689337 25.1705436377037 2524958.024579386 0.512716845817071 470.210622377966 28.5944069648651 89.4745062352732 360786.137785712 T 70 CATAB v2.0f-lin.ifort 2021-Apr-12 17:48:31 2021-Apr-12 17:48

Alternate Designations
 1974 MA = 1993 OL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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