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JPL Small-Body Database Browser
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46537 (1981 EV45)
Classification: Main-belt Asteroid          SPK-ID: 2046537
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1598701136851685 3.6726e-08  
a 2.912840481227734 2.2655e-08 au
q 2.447164342347095 1.081e-07 au
i 2.635805759845224 4.7769e-06 deg
node 294.2188699404179 0.00010313 deg
peri 338.7992072758345 0.00010433 deg
M 250.7399702807936 1.7303e-05 deg
tp 2459551.602387866768
(2021-Dec-03.10238787)
8.9199e-05 TDB
period 1815.8228598501
4.97
2.1184e-05
5.8e-08
d
yr
n .1982572242920869 2.3129e-09 deg/d
Q 3.378516620108373 2.6276e-08 au
  Orbit Determination Parameters
   # obs. used (total)      672  
   data-arc span      14313 days (39.19 yr)  
   first obs. used      1981-02-12  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57661  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:33:35  

Additional Information
 Earth MOID = 1.4311 au 
 Jupiter MOID = 1.7389 au 
 T_jup = 3.262 
[ 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 15.2   n/a MPO337630  
diameter diameter 5.878 km 0.120 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.85 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.056   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46537 (1981 EV45)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EV45 = 1992 PM1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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