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1778 Alfven (4506 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2001778
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1303316870177268 1.9165e-08  
a 3.151283328155994 1.1834e-08 au
q 2.740571255726586 6.0949e-08 au
i 2.473157356628659 8.0891e-07 deg
node 106.2269661385121 1.7183e-05 deg
peri 136.5253560108198 1.7464e-05 deg
M 68.46443522527142 7.2382e-06 deg
tp 2459007.909540499754
(2020-Jun-07.40954050)
4.0742e-05 TDB
period 2043.288094903496
5.59
1.151e-05
3.151e-08
d
yr
n .1761866086813385 9.9245e-10 deg/d
Q 3.561995400585402 1.3376e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3163  
   data-arc span      24410 days (66.83 yr)  
   first obs. used      1954-08-27  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42255  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 12:47:11  

Additional Information
 Earth MOID = 1.7286 au 
 Jupiter MOID = 1.45182 au 
 T_jup = 3.193 
[ 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 11.87   n/a E2021B10  
diameter diameter 20.623 km 0.240 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.82 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.095   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1778 Alfven (4506 P-L)          Discovered 1960-Sep-26 by PLS at Palomar
These planets have all been discovered as a result of the Palomar survey of faint minor planets and subsequently identified with planets observed at other oppositions. In Sept. and Oct. 1960, T. Gehrels exposed 130 plates with the 122 cm Schmidt camera at Palomar. In the following years C. J. van Houten and I. van Houten-Groeneveld measured these plates astrometrically and photometrically at Leiden. P. Herget, Cincinnati, computed the orbits of the planets found on the NORC computer, Dahlgren, Virginia, USA.
Note: "planet" implies "minor planet"
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1906-Feb-16 06:32 00:02 Jupiter 1.56414251428216 1.56414164221182 1.56414338635089 1.59005181433163 1.20217073262914 2417257.771887481 1.96839210387955 96.3207377756859 14.641861786124 14.0130687505582 2273395.81821213 T 47 CATAB v2.0g-lin.ifort 2021-Jul-08 12:48:15 2021-Jul-08 12:48
1916-Jul-07 00:02 00:02 Jupiter 1.50038622587557 1.50038571058667 1.50038674116729 1.50218264207295 1.06182863966626 2421051.501208216 1.7602176042451 203.769880889885 35.2917930376841 48.7083594088258 5034091.89322623 T 47 CATAB v2.0g-lin.ifort 2021-Jul-08 12:48:15 2021-Jul-08 12:48
1926-Nov-19 07:43 00:02 Jupiter 1.90003827765629 1.9000373424359 1.900039212877 3.20165168324259 3.05924644634928 2424838.821693905 1.50931222597137 65.4778088001554 5.86212022599467 -59.4319782532932 6364096.05428806 T 47 CATAB v2.0g-lin.ifort 2021-Jul-08 12:48:15 2021-Jul-08 12:48
1990-Jun-04 17:02 < 00:01 Jupiter 1.89999968082348 1.89999928231059 1.90000007933637 2.72601453887453 2.55725487057557 2448047.209674685 0.514688211794618 18.5467012371604 5.16297725595719 -51.3125594775432 6053491.50634598 T 47 CATAB v2.0g-lin.ifort 2021-Jul-08 12:48:15 2021-Jul-08 12:48
2000-Oct-25 17:07 < 00:01 Jupiter 1.50227698422952 1.50227677325154 1.50227719520724 1.40423166970974 0.918811731146686 2451843.212850854 0.323707165769574 92.3071152069824 17.9402442120297 8.33188157147667 4664433.66149896 T 47 CATAB v2.0g-lin.ifort 2021-Jul-08 12:48:15 2021-Jul-08 12:48
2011-Mar-17 06:39 < 00:01 Jupiter 1.55644460177417 1.5564443606189 1.55644484292936 1.73136585553304 1.38174557705043 2455637.777163550 0.14045907609398 32.382399890418 8.15615927614281 37.4444245584587 7508547.56928751 T 47 CATAB v2.0g-lin.ifort 2021-Jul-08 12:48:15 2021-Jul-08 12:48
2021-Aug-06 02:36 < 00:01 Jupiter 1.98871564440247 1.98871542868071 1.98871586012423 3.6456004908311 3.52683629599553 2459432.608378547 0.122557067766236 8.79607110334245 4.43642849531796 -16.74115604188 7190984.11563416 T 47 CATAB v2.0g-lin.ifort 2021-Jul-08 12:48:15 2021-Jul-08 12:48
2085-Feb-16 12:23 00:01 Jupiter 1.81122338270775 1.81122271148738 1.81122405392803 2.36780667331215 2.16129686528454 2482638.015900075 1.12082346867897 30.3574274758279 3.44593675656198 -65.9012230707276 5074942.65478947 T 47 CATAB v2.0g-lin.ifort 2021-Jul-08 12:48:15 2021-Jul-08 12:48
2095-Jul-09 13:47 00:01 Jupiter 1.4761720571279 1.47617181010392 1.47617230415155 1.33674383192095 0.799556669110108 2486433.074315340 1.33444686620174 156.816157487543 24.5305165857534 5.9239284661922 3856150.59772488 T 47 CATAB v2.0g-lin.ifort 2021-Jul-08 12:48:15 2021-Jul-08 12:48
2105-Nov-23 16:09 00:02 Jupiter 1.64087526786852 1.64087443477762 1.64087610096073 2.07363168108363 1.80763521222624 2490222.172718504 1.58542872478747 103.700151644518 5.05500157099572 84.6443118238572 5453817.51180246 T 47 CATAB v2.0g-lin.ifort 2021-Jul-08 12:48:15 2021-Jul-08 12:48
2179-Oct-29 19:17 00:03 Jupiter 1.71521083188458 1.71520932761647 1.71521233615143 2.020377000071 1.75905181429036 2517225.303427185 2.74067149483937 64.2511506679258 5.4285651391678 86.3559157630159 3977921.08532651 T 47 CATAB v2.0g-lin.ifort 2021-Jul-08 12:48:15 2021-Jul-08 12:48
2190-Mar-23 15:05 00:03 Jupiter 1.46456512956674 1.46456492471539 1.46456533441808 1.32581530057467 0.775305188289728 2521023.128560530 2.94724265489416 216.522062278268 63.9608050137127 23.0856984786752 4300494.37038508 T 47 CATAB v2.0g-lin.ifort 2021-Jul-08 12:48:15 2021-Jul-08 12:48
2200-Aug-08 10:59 00:03 Jupiter 1.71683677604652 1.71683500826551 1.71683854383222 2.42390478957514 2.21101557280889 2524812.957555338 3.2154422291041 182.413338428308 2.05780147775082 -82.0340184936872 5595289.03823835 T 47 CATAB v2.0g-lin.ifort 2021-Jul-08 12:48:15 2021-Jul-08 12:48

Alternate Designations
 4506 P-L = 1936 HK = 1952 DD1 = 1958 FB = 1959 NN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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