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1686 De Sitter (1935 SR1)
Classification: Main-belt Asteroid          SPK-ID: 2001686
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1600355829190626 3.1732e-08  
a 3.162434106494025 1.222e-08 au
q 2.656332120818129 1.0005e-07 au
i .6168651035547518 3.8451e-06 deg
node 6.315244682371693 0.00031416 deg
peri 294.4107358242562 0.00031437 deg
M 73.51370388204353 1.1311e-05 deg
tp 2458581.034295736868
(2019-Apr-07.53429574)
6.4119e-05 TDB
period 2054.142908878963
5.62
1.1906e-05
3.26e-08
d
yr
n .1752555766416797 1.0158e-09 deg/d
Q 3.668536092169921 1.4176e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3266  
   data-arc span      31698 days (86.78 yr)  
   first obs. used      1933-04-14  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44805  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:01:56  

Additional Information
 Earth MOID = 1.64086 au 
 Jupiter MOID = 1.55839 au 
 T_jup = 3.184 
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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 11.1   n/a MPO332831  
diameter diameter 29.661 km 0.290 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.088   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1686 De Sitter (1935 SR1)          Discovered 1935-Sep-28 by Van Gent, H. at Johannesburg (LS)
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
1932-May-24 20:27 00:02 Jupiter 1.80992709431968 1.80992626916838 1.80992791947068 2.09332944957591 1.8563550313568 2426852.352239493 1.59551967124028 60.6833549098172 8.91266072566797 -85.6998578237353 1934926.10886939 T 41 CATAB v2.0f-lin.ifort 2020-Feb-22 16:02:09 2020-Feb-22 16:02
1943-Feb-06 07:28 00:01 Jupiter 1.60035984009654 1.60035942378728 1.60036025640544 1.56171832812056 1.17491448937951 2430761.810988692 1.319843223992 75.6328410180775 54.2151507010388 -51.0237377669522 2621668.46681609 T 41 CATAB v2.0f-lin.ifort 2020-Feb-22 16:02:09 2020-Feb-22 16:02
1953-Oct-17 00:14 00:01 Jupiter 1.63018389181941 1.63018354751505 1.6301842361235 1.89364178698692 1.59583991163499 2434667.509803254 1.08718776769309 45.5762505790688 22.2988907401535 85.0257160458519 2609305.00856774 T 41 CATAB v2.0f-lin.ifort 2020-Feb-22 16:02:09 2020-Feb-22 16:02
1964-Jun-10 12:20 < 00:01 Jupiter 1.87589388743309 1.87589342755876 1.87589434730752 3.24430848999452 3.10201183421157 2438557.013813076 0.855761970428511 46.9276682058627 12.2363506066057 -77.5967086414986 3515215.10270488 T 41 CATAB v2.0f-lin.ifort 2020-Feb-22 16:02:09 2020-Feb-22 16:02
2039-Oct-14 17:24 < 00:01 Jupiter 1.93538654059624 1.93538610899986 1.9353869721925 2.49091849387425 2.30854376759449 2466076.224906831 0.560125253528541 42.7896757557612 9.0819293344344 -89.0157413758573 3055151.34119855 T 41 CATAB v2.0f-lin.ifort 2020-Feb-22 16:02:09 2020-Feb-22 16:02
2050-Jun-28 17:04 < 00:01 Jupiter 1.67000536400966 1.67000499242463 1.67000573559441 1.68669811429976 1.35298025280293 2469986.211281409 0.806161072087768 62.2285366536503 36.1011974918892 -75.0884350635102 2753199.3241104 T 41 CATAB v2.0f-lin.ifort 2020-Feb-22 16:02:09 2020-Feb-22 16:02
2061-Mar-13 22:56 00:01 Jupiter 1.59678994374607 1.59678961148753 1.59679027600435 1.65502704789491 1.29545663890532 2473897.455743212 1.09742441093844 61.9309739309231 44.2295587507432 -54.2141690677908 2608313.81828664 T 41 CATAB v2.0f-lin.ifort 2020-Feb-22 16:02:09 2020-Feb-22 16:02
2071-Nov-13 19:24 00:01 Jupiter 1.76391251687373 1.76391181699484 1.76391321675261 2.58374331002734 2.39067749276823 2477794.308018630 1.40544537945115 53.3310667294444 8.01561051894639 -80.0243198788755 2241366.5021542 T 41 CATAB v2.0f-lin.ifort 2020-Feb-22 16:02:09 2020-Feb-22 16:02
2157-Nov-22 21:11 00:03 Jupiter 1.77583754655235 1.77583634225797 1.77583875084652 1.9430905553133 1.67977958768082 2509214.382874443 2.94175443135758 98.0898280804527 13.9019406116681 87.916974491321 1759428.25398222 T 41 CATAB v2.0f-lin.ifort 2020-Feb-22 16:02:09 2020-Feb-22 16:02
2168-Aug-09 10:02 00:03 Jupiter 1.60954547015594 1.60954511599458 1.6095458243172 1.58130254593217 1.20333649523172 2513126.918028999 3.21093288467654 116.561344548083 50.3897161698671 -68.3386752546751 2972741.54238602 T 41 CATAB v2.0f-lin.ifort 2020-Feb-22 16:02:09 2020-Feb-22 16:02
2179-Apr-19 03:32 00:04 Jupiter 1.68144735624006 1.68144619951825 1.68144851296043 2.08743826450869 1.83027493740623 2517031.647500074 3.63592216537574 62.2074279962564 20.4388569188411 69.9204016005635 1118327.81829646 T 41 CATAB v2.0f-lin.ifort 2020-Feb-22 16:02:09 2020-Feb-22 16:02
2189-Dec-14 16:20 00:04 Jupiter 1.9285849270183 1.92858313422742 1.92858671981247 3.52143822472657 3.3944277276844 2520924.180529218 3.87296194322849 161.43474834406 15.5572508356179 -66.5736815022022 2866012.77465959 T 41 CATAB v2.0f-lin.ifort 2020-Feb-22 16:02:09 2020-Feb-22 16:02

Alternate Designations
 1935 SR1 = 1929 RK1 = 1933 GF = 1951 NG = 1952 UO1 = 1956 GG = 1958 VA = 1963 RD = 1967 GK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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