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JPL Small-Body Database Browser
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4895 Embla (1986 TK4)
Classification: Main-belt Asteroid          SPK-ID: 2004895
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2365275208085661 4.4471e-08  
a 2.354517624177165 8.2805e-09 au
q 1.797609407830465 1.0248e-07 au
i 7.126508748355263 4.0653e-06 deg
node 38.47871190373299 2.7743e-05 deg
peri 342.1138956907657 2.8614e-05 deg
M 113.0964020385492 8.412e-06 deg
tp 2458585.930227394402
(2019-Apr-12.43022739)		 2.9785e-05 TDB
period 1319.627463366561
3.61		 6.9614e-06
1.906e-08		 d
yr
n .2728042648351587 1.4391e-09 deg/d
Q 2.911425840523865 1.0239e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2004  
   data-arc span      23696 days (64.88 yr)  
   first obs. used      1955-03-22  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47211  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:24:51  

Additional Information
 Earth MOID = .802287 au 
 Jupiter MOID = 2.54771 au 
 T_jup = 3.507 
[ 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 13.5   n/a MPO347562  
diameter diameter 5.317 km 0.149 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 14.90 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2015) http://www.asu.cas.cz/~ppravec/neo.htm]
[Hills, K. (2017) Minor Planet Bull. 44, 114-115.]
geometric albedo albedo 0.216   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4895 Embla (1986 TK4)          Discovered 1986-Oct-13 by Jensen, P. at Brorfelde
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1986 TK4 = 1939 TH = 1968 UM = 1979 YR 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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