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118357 (1999 EM11)
Classification: Main-belt Asteroid          SPK-ID: 2118357
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1553766279669073 3.7196e-08  
a 2.41014429729375 8.298e-09 au
q 2.035664203466576 9.1768e-08 au
i 5.577724481285572 4.6097e-06 deg
node 346.849621971759 4.2005e-05 deg
peri 112.2169371713419 4.6352e-05 deg
M 337.1155800896686 1.6872e-05 deg
tp 2459287.376117012799
(2021-Mar-13.87611701)
6.4036e-05 TDB
period 1366.667901006668
3.74
7.058e-06
1.932e-08
d
yr
n .2634143962368832 1.3604e-09 deg/d
Q 2.784624391120925 9.5873e-09 au
  Orbit Determination Parameters
   # obs. used (total)      669  
   data-arc span      8036 days (22.00 yr)  
   first obs. used      1999-02-12  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53465  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:56:54  

Additional Information
 Earth MOID = 1.05998 au 
 Jupiter MOID = 2.37089 au 
 T_jup = 3.497 
[ 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 16.37   n/a E2021B55  
diameter diameter 1.651 km 0.354 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.196   0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118357 (1999 EM11)          Discovered 1999-Mar-15 by Spacewatch at Kitt Peak
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ 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
2116-May-04 19:07 00:13 Amphi 0.0470202619973906 0.0470092348770316 0.0470312895258647 1.49403735010081 1.49403726826817 2494037.296757637 12.5056196840746 588.326071206516 82.1937279582884 21.8340325233833 33585.3499516093 T 23 CATAB v2.0f-lin.ifort 2021-Apr-13 16:56:55 2021-Apr-13 16:56
2161-Apr-09 14:52 00:15 Amphi 0.0394009355963656 0.0393849577961187 0.0394169150289078 1.5621419710106 1.56214187761078 2510448.119195567 14.8803270397416 887.361687422053 82.4526013337912 26.7679519135309 32628.4290849715 T 23 CATAB v2.0f-lin.ifort 2021-Apr-13 16:56:55 2021-Apr-13 16:56
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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