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161922 (2007 EA57)
Classification: Outer Main-belt Asteroid          SPK-ID: 2161922
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07665743053918712 3.5305e-08  
a 3.232150531844985 3.2255e-08 au
q 2.984382176957881 1.1128e-07 au
i 15.09224641985939 6.3573e-06 deg
node 52.62205978665128 1.655e-05 deg
peri 74.17733442888877 4.8139e-05 deg
M 145.2761213704527 4.4198e-05 deg
tp 2458143.999676894208
(2018-Jan-25.49967689)
0.00025952 TDB
period 2122.44182601641
5.81
3.1771e-05
8.698e-08
d
yr
n .1696159562948684 2.539e-09 deg/d
Q 3.479918886732089 3.4727e-08 au
  Orbit Determination Parameters
   # obs. used (total)      630  
   data-arc span      8798 days (24.09 yr)  
   first obs. used      1996-05-14  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53818  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 03:11:03  

Additional Information
 Earth MOID = 2.04442 au 
 Jupiter MOID = 1.73758 au 
 T_jup = 3.127 
[ 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 14.7   n/a MPO436815  
diameter diameter 5.757 km 1.503 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.111   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

161922 (2007 EA57)          Discovered 2007-Mar-14 by Lowe, A. at Mayhill
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

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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
1964-Dec-07 13:43 00:02 Jupiter 1.99502244150914 1.99502106327944 1.99502381974905 5.52886436660363 5.45153238611552 2438737.071841464 2.42016209325914 253.147058362641 23.3545362507756 -75.6056393003903 2799791.6714028 T 17 CATAB v2.0f-lin.ifort 2020-Jun-24 03:11:16 2020-Jun-24 03:11
1976-Feb-27 12:47 00:02 Jupiter 1.85218176526627 1.85218091966585 1.85218261087248 4.94710945908791 4.85378930588132 2442836.032545493 1.95001548802676 236.427319095626 25.7210515505932 -82.8198208639358 2001133.64378758 T 17 CATAB v2.0f-lin.ifort 2020-Jun-24 03:11:16 2020-Jun-24 03:11
1987-May-26 08:14 00:02 Jupiter 1.79993147844333 1.79993087830723 1.79993207857964 4.16170403991779 4.04704936454921 2446941.842782317 1.49833192408321 260.188205955489 25.0182463576028 -88.4414710957858 1785346.60162427 T 17 CATAB v2.0f-lin.ifort 2020-Jun-24 03:11:16 2020-Jun-24 03:11
1998-Aug-18 17:29 00:01 Jupiter 1.82143290781427 1.82143224514258 1.82143357048782 3.1549459675334 3.00393447554737 2451044.228151991 1.07004012514245 309.290228347848 27.6439440311863 -89.2469067664756 1915794.99560471 T 17 CATAB v2.0f-lin.ifort 2020-Jun-24 03:11:16 2020-Jun-24 03:11
2009-Oct-20 14:54 < 00:01 Jupiter 1.87071410687588 1.87071331291964 1.87071490083286 2.09249906101108 1.86359644171632 2455125.121128921 0.634999629192983 138.322979189841 40.8801822701875 -88.0926461320164 1974119.68277639 T 17 CATAB v2.0f-lin.ifort 2020-Jun-24 03:11:16 2020-Jun-24 03:11
2020-Dec-09 06:11 < 00:01 Jupiter 1.91380489021918 1.91380406376702 1.91380571667155 2.24514731590245 2.03850809136383 2459192.757637208 0.5513740949464 73.5165621187517 12.1210875655033 56.1342473970838 2026113.92788881 T 17 CATAB v2.0f-lin.ifort 2020-Jun-24 03:11:16 2020-Jun-24 03:11
2032-Feb-17 23:25 < 00:01 Jupiter 1.95059921888034 1.9505984860229 1.95059995173779 3.28685838637504 3.15197777358291 2463280.475715357 0.941167667087935 82.9141017688489 23.9128682803918 76.8461247755756 1788862.21065703 T 17 CATAB v2.0f-lin.ifort 2020-Jun-24 03:11:16 2020-Jun-24 03:11
2166-Aug-05 19:57 00:05 Jupiter 1.9404430344252 1.94043999207538 1.94044607682653 5.24196976728478 5.15802552559204 2512392.331049146 5.05295801993177 534.235523702273 25.8991605609841 -74.2146621085941 2456641.39276259 T 17 CATAB v2.0f-lin.ifort 2020-Jun-24 03:11:16 2020-Jun-24 03:11
2177-Oct-31 10:49 00:05 Jupiter 1.78281392605196 1.78281219561742 1.78281565653109 4.76927158158278 4.66859110129843 2516496.950873965 5.08097494521141 492.331352467267 27.1109825597794 -81.3840235472504 1687270.57017468 T 17 CATAB v2.0f-lin.ifort 2020-Jun-24 03:11:16 2020-Jun-24 03:11
2189-Feb-08 18:02 00:05 Jupiter 1.72466850863141 1.72466791225186 1.72466910501125 4.15818566075548 4.03834918522289 2520615.251509318 5.39605613685263 269.555395515064 31.3124747036892 -89.3265574085898 888261.931375243 T 17 CATAB v2.0f-lin.ifort 2020-Jun-24 03:11:16 2020-Jun-24 03:11
2200-May-20 04:57 00:06 Jupiter 1.75946384588575 1.75946231461067 1.75946537732326 3.3625774630678 3.21622578538235 2524732.706155863 6.30044262895787 1054.54838069109 45.2603778369658 -83.9911514971016 2147598.67397504 T 17 CATAB v2.0f-lin.ifort 2020-Jun-24 03:11:16 2020-Jun-24 03:11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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