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30718 Records (1955 RB1)
Classification: Main-belt Asteroid          SPK-ID: 2030718
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3152494212720512 3.6532e-08  
a 2.766724305528492 1.0609e-08 au
q 1.894516069391317 1.01e-07 au
i 5.296399787422981 4.5618e-06 deg
node 278.2299547593047 5.0835e-05 deg
peri 54.57368588425101 5.1409e-05 deg
M 39.9111477125226 9.2601e-06 deg
tp 2458814.145891926494
(2019-Nov-26.64589193)
4.2616e-05 TDB
period 1680.920814146689
4.60
9.6686e-06
2.647e-08
d
yr
n .2141683278416374 1.2319e-09 deg/d
Q 3.638932541665667 1.3954e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1328  
   data-arc span      23695 days (64.87 yr)  
   first obs. used      1955-09-14  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55609  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 02:44:25  

Additional Information
 Earth MOID = .890002 au 
 Jupiter MOID = 1.78358 au 
 T_jup = 3.259 
[ 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 14.0   n/a MPO351041  
diameter diameter 9.219 km 0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.066   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30718 Records           Discovered 1955 Sept. 14 at the Goethe Link Observatory, Indiana University.
Brenda Records (b. 1946) served the Indiana University Astronomy Department for more than 20 years. Her personal warmth and Hoosier spirit helped generations of graduate students complete their degrees and made the department a home-away-from-home for faculty, students, staff and visitors.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20071124/MPCPages.arcLast Updated: 2007-11-26

[ 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
1921-Mar-18 23:54 00:02 Jupiter 1.90621425038711 1.90621313879013 1.90621536235161 0.832947776945835 n/a 2422767.495923276 1.66764606747992 1541.19461984598 28.5741511432439 88.2332087586551 9972592.70873417 F 24 CATAB v2.0f-lin.ifort 2020-Aug-25 02:44:37 2020-Aug-25 02:44
1943-Jul-28 06:05 00:01 Jupiter 1.79660599848389 1.79660540870166 1.79660658828735 1.54068239756892 1.1961555935117 2430933.753321898 1.20529352692648 693.820861293344 141.211781818688 -84.6190847446848 1254680.02704679 T 24 CATAB v2.0f-lin.ifort 2020-Aug-25 02:44:37 2020-Aug-25 02:44
2003-Sep-26 00:52 < 00:01 Jupiter 1.78607931274671 1.78607890598439 1.78607971951004 1.01175648239436 0.274189430613143 2452908.536057201 0.263807181092246 11921.4826341897 785.968916585071 8.81028871760759 2411631.97880014 T 24 CATAB v2.0f-lin.ifort 2020-Aug-25 02:44:37 2020-Aug-25 02:44
2026-Feb-02 05:30 < 00:01 Jupiter 1.94315171432562 1.94315119980317 1.94315222884808 1.99398866171403 1.76187060279715 2461073.729498255 0.311819402250796 163.149712588423 21.1444544891621 -77.6977846447096 1978864.07948227 T 24 CATAB v2.0f-lin.ifort 2020-Aug-25 02:44:37 2020-Aug-25 02:44
2086-Apr-11 06:40 00:01 Jupiter 1.77487458931654 1.77487416982894 1.77487501510685 1.26365003897447 0.80146891245665 2483056.778109239 1.22279269780368 9877.07500048719 525.858303014331 -89.9835399621668 1116982.98446791 T 24 CATAB v2.0f-lin.ifort 2020-Aug-25 02:44:37 2020-Aug-25 02:44
2146-Jun-13 23:44 00:02 Jupiter 1.8413327638864 1.84133179985117 1.84133372830637 0.71670122115406 n/a 2505034.488994827 2.28081175528097 1573.50644844956 25.7979662661908 88.5221765981743 10671235.0792468 F 24 CATAB v2.0f-lin.ifort 2020-Aug-25 02:44:37 2020-Aug-25 02:44
2168-Oct-19 20:38 00:03 Jupiter 1.86875222904985 1.86875092587967 1.86875353222661 1.63542839270379 1.32970474822397 2513198.359960609 2.6919259893658 400.394097629538 150.514314194544 88.6852943588961 767700.592897348 T 24 CATAB v2.0f-lin.ifort 2020-Aug-25 02:44:37 2020-Aug-25 02:44

Alternate Designations
 1955 RB1 = 1955 TJ = 1964 PH = 1978 VN13 = 2001 KW67 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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