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2678 Aavasaksa (1938 DF1)
Classification: Main-belt Asteroid          SPK-ID: 2002678
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08623924166265312 3.3335e-08  
a 2.259696049750198 7.0865e-09 au
q 2.064821576031648 7.5696e-08 au
i 3.444197818265775 3.3443e-06 deg
node 54.02941157199475 7.4793e-05 deg
peri 45.65144643343046 7.9198e-05 deg
M 134.4372701201597 2.5279e-05 deg
tp 2458537.169754916839
(2019-Feb-22.66975492)
8.7007e-05 TDB
period 1240.719095834462
3.40
5.8365e-06
1.598e-08
d
yr
n .2901543155164202 1.3649e-09 deg/d
Q 2.454570523468748 7.6977e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2207  
   data-arc span      29904 days (81.87 yr)  
   first obs. used      1938-02-22  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45861  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 18:41:02  

Additional Information
 Earth MOID = 1.08338 au 
 Jupiter MOID = 2.64433 au 
 T_jup = 3.613 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456462.5 (2013-Jun-19.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08603078406845618 3.3459e-08  
q 2.065465455193036 7.6029e-08 au
tp 2456055.939858242719
(2012-May-08.43985824)
8.7602e-05 TDB
node 54.06467757675449 7.4802e-05 deg
peri 45.76274227051857 7.9209e-05 deg
i 3.444289709285924 3.3435e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2207  
   data-arc span      29904 days (81.87 yr)  
   first obs. used      1938-02-22  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45861  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 18:41:02  

Additional Information
 Jupiter MOID = 2.64433 au 
 T_jup = 3.613 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.119488754926452E-15 -2.534397047539225E-15 9.54808964934996E-13 4.839313331910208E-15 2.802770710041787E-13 -4.375564767511901E-16
q -2.534397047539225E-15 5.780423179393469E-15 -2.219058780704707E-12 -1.092093456320889E-14 -6.485129397439687E-13 1.048438896260708E-15
tp 9.54808964934996E-13 -2.219058780704707E-12 7.674128929674652E-9 -6.103374255441844E-12 2.303703444947747E-9 -4.223877579373566E-13
node 4.839313331910208E-15 -1.092093456320889E-14 -6.103374255441844E-12 5.595381904256111E-9 -5.586829318801259E-9 -3.358708138120109E-11
peri 2.802770710041787E-13 -6.485129397439687E-13 2.303703444947747E-9 -5.586829318801259E-9 6.274047896159438E-9 3.340383656721644E-11
i -4.375564767511901E-16 1.048438896260708E-15 -4.223877579373566E-13 -3.358708138120109E-11 3.340383656721644E-11 1.117912823159489E-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 12.5   n/a MPO431526  
diameter diameter 8.371 km 0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 82.2 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Rowe, B. (2019) Minor Planet Bull. 46, 353-356.]
geometric albedo albedo 0.276   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2678 Aavasaksa (1938 DF1)          Discovered 1938-Feb-24 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1938 DF1 = 1952 KM = 1955 DH = 1977 SX1 = 1979 FP2 = A916 WA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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