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7336 Saunders (1989 RS1)
Classification: Amor [NEO]          SPK-ID: 2007336
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 146 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4817050719244923 3.3664e-08  
a 2.304880273500982 1.403e-09 au
q 1.194607755576848 7.7739e-08 au
i 7.197246574134468 4.5806e-06 deg
node 174.4846160090812 1.7776e-05 deg
peri 181.4679167493537 2.6322e-05 deg
M 275.4450595045838 7.5735e-06 deg
tp 2459300.697776240912
(2021-Mar-27.19777624)
2.6792e-05 TDB
period 1278.118094738495
3.50
1.167e-06
3.195e-09
d
yr
n .2816641134195479 2.5717e-10 deg/d
Q 3.415152791425116 2.0788e-09 au
  Orbit Determination Parameters
   # obs. used (total)      897  
   data-arc span      12871 days (35.24 yr)  
   first obs. used      1982-10-20  
   last obs. used      2018-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4492  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Jan-16 06:56:03  

Additional Information
 Earth MOID = .190276 au 
 Jupiter MOID = 2.03648 au 
 T_jup = 3.415 
[ 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 18.8   n/a MPO179645  
rotation period rot_per 4.307 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2018) Minor Planet Bull. 45, 138-147.]
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.J.; Pravec, P.; Koehn, B.W. (2019) Minor Plantet Bull. 46, 238-265.]
SMASSII spectral type spec_B Sq   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)

7336 Saunders           Discovered 1989 Sept. 6 by E. F. Helin at Palomar.
R. Stephen Saunders (b. 1940), chief scientist for the Solar System Exploration Office at the Jet Propulsion Laboratory, is the project scientist for the Mars Surveyor Program 2001/2003 mission, director of JPL's Regional Planetary Image Facility and former project scientist of the Magellan mission to Venus.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000726/MPCPages.arcLast Updated: 2013-03-29

[ 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
1919-Sep-04 08:43 < 00:01 Earth 0.479459151575939 0.479453450312007 0.479464852841641 7.17549480032731 7.17472028087527 2422205.863453234 0.759655802561872 287.991221714787 10.0925969512798 9.25145330154453 719890.022266053 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
1926-Sep-09 12:38 < 00:01 Earth 0.445503230709853 0.445497971740798 0.445508489679111 7.73021660454348 7.72944287074017 2424768.026066788 0.381626482313513 262.658930860185 9.7301683997271 3.37157977187559 317310.179577768 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
1933-Sep-14 23:50 < 00:01 Earth 0.373128919251374 0.373124405085241 0.373133433417592 7.7869390482526 7.78602195764411 2427330.492721504 0.118033873232627 225.284675863903 9.31133934508878 -2.51011405088758 248779.545503458 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
1940-Sep-15 16:15 < 00:01 Earth 0.289937041493391 0.289933679308072 0.289940403679864 6.69492483245998 6.6935520318076 2429888.177423116 0.156332162850415 170.116940287116 10.2858386605457 -9.84727189795054 518287.314501119 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
1947-Sep-15 14:05 < 00:01 Earth 0.251738402027316 0.251736156656483 0.251740647400338 5.86312582792259 5.86132031523213 2432444.086747030 0.187119154348894 118.010048284023 11.6585094129141 -18.561936612908 714295.454565132 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
1954-Sep-15 15:13 < 00:01 Earth 0.238899082568471 0.23889751280907 0.238900652329964 5.71531465660031 5.71336287197957 2435001.133997059 0.213361788036196 86.0416439786303 11.8878973776192 -24.8210048539262 890100.488547089 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
1961-Sep-16 03:27 < 00:01 Earth 0.219104071323655 0.219103098251957 0.219105044397109 5.68415592663679 5.68201610448109 2437558.643896417 0.244499510749576 58.0564105300803 11.9964352851585 -34.1631453004463 1128936.34169264 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
1968-Sep-15 22:08 < 00:01 Earth 0.195812363902472 0.195811981699708 0.19581274610635 5.41383824557405 5.41132423084047 2440115.422089653 0.263039496063578 34.8132636260226 11.427306178022 -62.3750485441998 1830580.8596874 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
1975-Sep-16 09:23 < 00:01 Earth 0.192573231191511 0.192573009289601 0.19257345309352 5.28617605061439 5.28355797385189 2442671.891308090 0.264419522298634 27.2405844669289 10.6745930134035 -83.3081950568378 2361140.39168807 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
1982-Sep-16 11:02 < 00:01 Earth 0.203284211542177 0.203283948726857 0.203284474357717 5.31745666973641 5.31499116726591 2445228.959757393 0.267147157061992 25.0313239954238 11.3966023114627 -73.1196394246425 2152501.40796981 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
1989-Sep-16 06:54 < 00:01 Earth 0.204784828655703 0.204784596902325 0.204785060409082 5.34764665864861 5.3452130501999 2447785.787757341 0.265724859975547 19.3760930079948 11.4588079953745 -84.4578739138722 2221458.86301958 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
1996-Sep-16 01:22 < 00:01 Earth 0.193702991856032 0.193702765352766 0.193703218359308 5.32143411977111 5.31884857026752 2450342.556974436 0.254600436732908 15.1513019420297 10.9336174942121 74.2970641486054 2259914.29546284 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
2003-Sep-16 19:49 < 00:01 Earth 0.190273351219086 0.190273124860661 0.190273577577512 5.29320085119264 5.29055463948229 2452899.325467405 0.25181385996474 13.812981258132 10.9047119447768 69.8382143607698 2287207.33532974 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
2010-Sep-16 15:07 < 00:01 Earth 0.20243852097567 0.202438290795121 0.20243875115622 5.32804596182433 5.32557508012819 2455456.130000503 0.26214149722133 16.3127965967129 11.4504210764738 85.9624564192076 2281575.12491064 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
2017-Sep-17 00:31 < 00:01 Earth 0.231881910942832 0.231881668037954 0.231882153847723 5.81075032174738 5.80877249981564 2458013.521831869 0.231040525786891 14.8775693642839 11.5565083002564 67.2137187592967 2361090.82115905 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
2024-Sep-16 20:18 < 00:01 Earth 0.236907686413367 0.236907409370568 0.236907963456194 5.89851346361277 5.89660641904976 2460570.345812197 0.225021595697882 15.2863924770337 11.9415729060072 43.329606006534 1901467.41745668 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
2031-Sep-17 07:56 < 00:01 Earth 0.235104165065259 0.235103857926065 0.235104472204454 5.82531956132115 5.82337373166214 2463126.830228741 0.22307024882977 15.3137202800556 14.1327890407715 -0.709902388236584 1622523.51563785 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
2038-Sep-17 05:23 < 00:01 Earth 0.257389512841031 0.257389119032064 0.257389906650026 6.14822989912345 6.14654594254273 2465683.724424756 0.202147843417575 20.468595238953 13.1713442404114 -21.6496947568966 1434998.43803068 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
2045-Sep-14 21:14 < 00:01 Earth 0.359449503294699 0.359448921970523 0.359450084618895 7.1653653393025 7.16433075118821 2468238.384679868 0.146592119100502 29.2044066215004 11.4445642011709 -7.6363977803438 1301088.39330088 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
2052-Sep-11 22:27 < 00:01 Earth 0.453699198099918 0.453698487181335 0.453699909018501 8.07523607619399 8.07450878442061 2470792.435748781 0.108155852113827 35.4465771012776 10.3414150157994 -0.237336881639578 1193562.18771846 T 146 CATAB v2.0e-lin.ifort 2018-Jan-16 06:56:11 2018-Dec-17 15:43
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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