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JPL Small-Body Database Browser
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48686 (1996 EM1)
Classification: Main-belt Asteroid          SPK-ID: 2048686
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2049490613063135 5.4039e-08  
a 2.58741288875015 1.178e-08 au
q 2.057125045988951 1.3807e-07 au
i 10.87787375251724 5.2735e-06 deg
node 335.5729520144152 2.4045e-05 deg
peri 229.8309591270709 2.5554e-05 deg
M 272.2582230039131 1.0145e-05 deg
tp 2459371.010873269315
(2021-Jun-05.51087327)
4.3573e-05 TDB
period 1520.18706417243
4.16
1.0382e-05
2.842e-08
d
yr
n .2368129610390937 1.6173e-09 deg/d
Q 3.11770073151135 1.4194e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1138  
   data-arc span      21651 days (59.28 yr)  
   first obs. used      1960-10-22  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52591  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:11:57  

Additional Information
 Earth MOID = 1.07345 au 
 Jupiter MOID = 1.93238 au 
 T_jup = 3.367 
[ 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 14.5   n/a MPO502480  
diameter diameter 3.434 km 0.566 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.313   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48686 (1996 EM1)          Discovered 1996-Mar-10 by Endate, K., Watanabe, K. at Kitami
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ 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
1939-Dec-04 03:45 00:01 Jupiter 1.9226306868087 1.92263023786788 1.9226311358139 2.83135075362167 2.67122429211824 2429601.655921560 1.41772392616756 1339.02125628864 13.3078363413214 88.8669302100506 2159776.16614788 T 20 CATAB v2.0f-lin.ifort 2020-Feb-23 09:12:09 2020-Feb-23 09:12
2010-Jul-21 13:44 < 00:01 Jupiter 1.99135828442544 1.99135787879163 1.99135869006571 3.45279235208429 3.32732276231095 2455399.071964294 0.161753513728037 383.574097045584 11.6506975529666 87.8130040731743 2623877.19326622 T 20 CATAB v2.0f-lin.ifort 2020-Feb-23 09:12:09 2020-Feb-23 09:12
2023-Jul-17 04:52 < 00:01 Jupiter 1.97221638504618 1.97221591498399 1.97221685511319 2.09379405507793 1.87750328693111 2460142.702431003 0.262091186357793 179.506748218215 47.3292420160775 89.8558708268477 1608567.8882351 T 20 CATAB v2.0f-lin.ifort 2020-Feb-23 09:12:09 2020-Feb-23 09:12
2094-Feb-23 22:36 00:02 Jupiter 1.93434341817156 1.93434292383016 1.93434391251274 2.74762340600501 2.58334313373059 2485932.441963502 1.53021718258626 965.765356836895 13.905989318043 88.712185605123 1711705.54313174 T 20 CATAB v2.0f-lin.ifort 2020-Feb-23 09:12:09 2020-Feb-23 09:12
2177-Oct-08 13:36 00:03 Jupiter 1.97104560135429 1.97104476003881 1.97104644267784 1.96922218386659 1.73734591982383 2516474.066802085 3.29192607813227 407.871313502164 75.48838039634 68.1549775770933 1647048.51904185 T 20 CATAB v2.0f-lin.ifort 2020-Feb-23 09:12:09 2020-Feb-23 09:12

Alternate Designations
 1996 EM1 = 1999 XM165 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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