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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 147 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .481731909804241 3.3164e-08  
a 2.305394118845106 1.3219e-09 au
q 1.194812207122388 7.6581e-08 au
i 7.197084146543903 4.6049e-06 deg
node 174.4772790174736 1.7447e-05 deg
peri 181.4517022510571 2.6545e-05 deg
M 331.7951701340352 7.7571e-06 deg
tp 2459300.669886538387
(2021-Mar-27.16988654)
2.7527e-05 TDB
period 1278.545530151729
3.50
1.0997e-06
3.011e-09
d
yr
n .2815699492197807 2.4217e-10 deg/d
Q 3.415976030567824 1.9587e-09 au
  Orbit Determination Parameters
   # obs. used (total)      901  
   data-arc span      12871 days (35.24 yr)  
   first obs. used      1982-10-20  
   last obs. used      2018-01-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44637  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 19:37:30  

Additional Information
 Earth MOID = .188796 au 
 Jupiter MOID = 2.03654 au 
 T_jup = 3.414 
[ 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. 2020-October); 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 00:02 Earth 0.479459205143909 0.479453508383271 0.479464901907299 7.17549170208027 7.17471718238016 2422205.863432397 1.60915477624886 289.827444699606 10.7340346741691 11.3266857797491 999155.347717903 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
1926-Sep-09 12:37 < 00:01 Earth 0.445503461385229 0.445498208529258 0.445508714241528 7.73021434723349 7.72944061360472 2424768.026036928 0.655420656376402 262.611419730534 10.0961657385897 4.06761344166546 488537.952171213 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
1933-Sep-14 23:50 < 00:01 Earth 0.373129226572735 0.373124722664444 0.373133730481131 7.78694239364136 7.78602530418215 2427330.492711536 0.129280551577496 224.810270854885 8.39275628686435 -2.69645513384337 300298.763141719 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
1940-Sep-15 16:15 < 00:01 Earth 0.289937244576294 0.289933890457729 0.289940598695832 6.69492741830015 6.69355461913952 2429888.177420036 0.106548590725213 169.35265560516 7.79615082824615 -9.12635247079444 668308.230580735 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
1947-Sep-15 14:05 < 00:01 Earth 0.251738480149406 0.251736236891301 0.251740723409386 5.86312626173064 5.86132074973387 2432444.086743959 0.0870683540466693 117.005905033322 7.85454153318188 -17.1557002424912 1088357.37569451 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
1954-Sep-15 15:13 < 00:01 Earth 0.238899103313362 0.238897534304247 0.238900672324108 5.71531415210972 5.7133623674858 2435001.133993661 0.0941737128529238 84.2628372714266 8.05505791167299 -21.9534296987606 1311833.95014062 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
1961-Sep-16 03:27 < 00:01 Earth 0.21910405374167 0.219103084270656 0.219105023213878 5.68415475183264 5.68201492906238 2437558.643892679 0.107805556327414 54.8404879736264 8.4323144259691 -28.5877760129871 1555621.15386954 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
1968-Sep-15 22:08 < 00:01 Earth 0.195812321434884 0.195811942620859 0.195812700249654 5.41383642215519 5.41132240602866 2440115.422083144 0.103345595650994 29.089098255588 9.54518748239512 -53.6335643660286 2282753.14190518 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
1975-Sep-16 09:23 < 00:01 Earth 0.192573209040736 0.192572989957854 0.192573428123684 5.28617438824086 5.28355631035294 2442671.891302213 0.0990701013409674 20.0965946714888 10.2745121407663 -77.5748635373519 2503670.58596507 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
1982-Sep-16 11:02 < 00:01 Earth 0.203284180481459 0.203283919341742 0.203284441621303 5.31745491505301 5.31498941139131 2445228.959752912 0.0979627362313518 17.9929750943912 9.92178108311865 -55.8242283655226 2406974.39621992 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
1989-Sep-16 06:54 < 00:01 Earth 0.204784809948886 0.204784581876541 0.204785038021232 5.34764516644198 5.34521155709109 2447785.787754399 0.100966029721032 12.5723600197707 10.1782266688226 -46.5338616853968 2467952.3697406 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
1996-Sep-16 01:22 < 00:01 Earth 0.19370298161284 0.193702759017816 0.193703204207865 5.32143261048434 5.31884706010984 2450342.556971033 0.0954063999524361 11.1021585503801 8.43361369657459 0.0633174546551089 2404661.9817117 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
2003-Sep-16 19:49 < 00:01 Earth 0.19027334236867 0.19027311943714 0.190273565300201 5.29319928846471 5.29055307584913 2452899.325462816 0.0945662359232919 11.1413347310034 7.57981453133127 -4.97036515664151 2370164.4766208 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
2010-Sep-16 15:07 < 00:01 Earth 0.202438509179142 0.20243828187253 0.202438736485765 5.32804459168522 5.32557370920892 2455456.129996715 0.0983894192266662 11.3793741671922 8.70045493928425 -7.69541629592572 2445792.79821414 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
2017-Sep-17 00:31 < 00:01 Earth 0.231881882181531 0.231881641996878 0.231882122366184 5.81074905007239 5.80877122746195 2458013.521828386 0.105477473690257 11.9909856817079 8.19196514914414 3.46019409740889 2698221.18678994 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
2024-Sep-16 20:18 < 00:01 Earth 0.236907651298057 0.236907377347091 0.236907925249023 5.89851215702517 5.89660511175654 2460570.345808678 0.109736858545746 13.6641672993341 8.10530911399822 1.25674324726871 2289864.08256311 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
2031-Sep-17 07:56 < 00:01 Earth 0.235104106285657 0.235103801421755 0.23510441114956 5.82531796496488 5.82337213428555 2463126.830225002 0.102797174738225 15.346150487559 8.34012688568304 -9.37993552961822 1983939.55858562 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
2038-Sep-17 05:23 < 00:01 Earth 0.257389391021648 0.257388997672088 0.257389784371223 6.14822783104387 6.14654387309916 2465683.724422982 0.108084244577988 20.0238944024571 8.41949606542961 -12.8567864036482 1655394.00332957 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
2045-Sep-14 21:14 < 00:01 Earth 0.359449555657463 0.359448975327174 0.359450135987751 7.16536486684848 7.1643302788165 2468238.384673377 0.135927580997514 29.0784818446331 8.8150486743471 -5.99439026984111 1299247.62132144 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
2052-Sep-11 22:27 < 00:01 Earth 0.453699462857466 0.453698756070721 0.453700169644212 8.07523411962323 8.07450682809791 2470792.435717890 0.208672679996178 35.243157805557 11.8714985722283 0.418191371567979 1179335.71788013 T 147 CATAB v2.0f-lin.ifort 2021-Apr-12 19:37:39 2021-Apr-12 19:37
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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