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46478 (1097 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2046478
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .080771212472198 4.1283e-08  
a 2.77956774326089 1.2362e-08 au
q 2.555058686489097 1.1896e-07 au
i 1.836729589892642 4.2669e-06 deg
node 300.0044609080007 0.00012194 deg
peri 69.78999257211692 0.00012456 deg
M 18.84263838506296 2.5339e-05 deg
tp 2458911.906158340175
(2020-Mar-03.40615834)
0.00011898 TDB
period 1692.638915302857
4.63
1.1292e-05
3.092e-08
d
yr
n .2126856453229936 1.4188e-09 deg/d
Q 3.004076800032684 1.336e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1206  
   data-arc span      16879 days (46.21 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .566  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:55:18  

Additional Information
 Earth MOID = 1.55494 au 
 Jupiter MOID = 2.40518 au 
 T_jup = 3.328 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456670.5 (2014-Jan-13.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08335149041822384 4.1862e-08  
q 2.548147708362248 1.211e-07 au
tp 2457212.325514210360
(2015-Jul-08.82551421)
0.0001103 TDB
node 300.3231959575244 0.00012208 deg
peri 68.28014322557569 0.00012443 deg
i 1.834929199591276 4.2691e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1206  
   data-arc span      16879 days (46.21 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .566  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:55:18  

Additional Information
 Jupiter MOID = 2.40518 au 
 T_jup = 3.328 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.75244141970459E-15 -5.049447696851101E-15 -1.656753008574575E-12 1.158686936672249E-15 -3.579731046615521E-13 -3.572999527760897E-16
q -5.049447696851101E-15 1.466541657483549E-14 4.873504635310424E-12 -2.588470664546226E-15 1.043425534342703E-12 1.200483834591098E-15
tp -1.656753008574575E-12 4.873504635310424E-12 1.216619450838175E-8 -5.325937406387451E-12 2.674222800667501E-9 5.480441904507819E-13
node 1.158686936672249E-15 -2.588470664546226E-15 -5.325937406387451E-12 1.490341253549141E-8 -1.489666907330365E-8 1.621309243308931E-10
peri -3.579731046615521E-13 1.043425534342703E-12 2.674222800667501E-9 -1.489666907330365E-8 1.54840162690674E-8 -1.619446262602641E-10
i -3.572999527760897E-16 1.200483834591098E-15 5.480441904507819E-13 1.621309243308931E-10 -1.619446262602641E-10 1.822502028950625E-11

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 14.8   n/a MPO359049  
diameter diameter 4.505 km 0.217 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.126   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46478 (1097 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1097 T-2 = 2001 RP74 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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