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1507 Vaasa (1939 RD)
Classification: Main-belt Asteroid          SPK-ID: 2001507
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2448476907859116 4.008e-08  
a 2.330971110641437 8.8265e-09 au
q 1.760238216912209 9.2999e-08 au
i 9.226828728678306 4.3131e-06 deg
node 292.804636874716 2.4362e-05 deg
peri 50.49700403456853 2.6058e-05 deg
M 250.6784837748098 1.3602e-05 deg
tp 2459395.236157413227
(2021-Jun-29.73615741)		 5.0893e-05 TDB
period 1299.88150160707
3.56		 7.3833e-06
2.021e-08		 d
yr
n .2769483214854004 1.5731e-09 deg/d
Q 2.901704004370665 1.0988e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1850  
   data-arc span      22884 days (62.65 yr)  
   first obs. used      1957-11-25  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46693  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:18:18  

Additional Information
 Earth MOID = .767772 au 
 Jupiter MOID = 2.5436 au 
 T_jup = 3.513 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456746.5 (2014-Mar-30.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2446455532165807 4.0156e-08  
q 1.761027325825209 9.3262e-08 au
tp 2456792.592764604057
(2014-May-15.09276460)		 3.9886e-05 TDB
node 292.9578100073521 2.4294e-05 deg
peri 49.94759684351988 2.6001e-05 deg
i 9.240249075251132 4.3186e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1850  
   data-arc span      22884 days (62.65 yr)  
   first obs. used      1957-11-25  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46693  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:18:18  

Additional Information
 Jupiter MOID = 2.5436 au 
 T_jup = 3.513 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.612481821245973E-15 -3.735131509838933E-15 6.044498278736688E-15 4.782021766334057E-15 -2.587420430420496E-14 2.355238500694196E-16
q -3.735131509838933E-15 8.697762439760125E-15 1.665692138224652E-13 -1.174921039821786E-14 9.962514131339747E-14 -4.028298842586485E-16
tp 6.044498278736688E-15 1.665692138224652E-13 1.590921675812877E-9 -8.649011881308583E-12 3.842057956330794E-10 1.370681002171846E-12
node 4.782021766334057E-15 -1.174921039821786E-14 -8.649011881308583E-12 5.901927188731519E-10 -5.840757272530833E-10 2.203199635316856E-11
peri -2.587420430420496E-14 9.962514131339747E-14 3.842057956330794E-10 -5.840757272530833E-10 6.760306258584845E-10 -2.146085329665679E-11
i 2.355238500694196E-16 -4.028298842586485E-16 1.370681002171846E-12 2.203199635316856E-11 -2.146085329665679E-11 1.865052156411907E-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 13.6   n/a MPO365262  
diameter diameter 4.648 km 0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 34.07 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2004) Minor Planet Bull. 31, 4-6.]
geometric albedo albedo 0.444   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1507 Vaasa (1939 RD)          Discovered 1939-Sep-12 by Oterma, L. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1939 RD = 1964 TA 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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