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JPL Small-Body Database Browser
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27995 (1997 WL2)
Classification: Mars-crossing Asteroid          SPK-ID: 2027995
[ 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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2723811312652498 5.289e-08  
a 2.122680399943471 8.9056e-09 au
q 1.544502311292295 1.1611e-07 au
i 3.461968867303821 3.7895e-06 deg
node 71.28802453161812 6.5871e-05 deg
peri 232.3143847720133 6.6223e-05 deg
M 204.4557281085225 5.5405e-06 deg
tp 2459488.564099128027
(2021-Oct-01.06409913)		 1.8869e-05 TDB
period 1129.601711136474
3.09		 7.1088e-06
1.946e-08		 d
yr
n .3186964010861934 2.0056e-09 deg/d
Q 2.700858488594646 1.1331e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1455  
   data-arc span      16270 days (44.54 yr)  
   first obs. used      1975-10-03  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53817  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:25:20  

Additional Information
 Earth MOID = .532473 au 
 Jupiter MOID = 2.55245 au 
 T_jup = 3.678 
[ 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 15.1   n/a MPO439294  
diameter diameter 2.056 km 0.369 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.381   0.158 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

27995 (1997 WL2)          Discovered 1997-Nov-23 by Kobayashi, T. at Oizumi
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 WL2 = 1975 TN3 = 2000 VL32 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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